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::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, it is almost completely naked apart from some fine down | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, it relies on its parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, it is almost completely naked apart from some fine down | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, it relies on its parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, it relies on its parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it is almost completely naked apart from some fine down | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, it relies on its parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, it relies on its parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, it relies on its parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, it is almost completely naked apart from some fine down | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, it relies on its parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it relies on its parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it is almost completely naked apart from some fine down | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, it relies on its parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it relies on its parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, it relies on its parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it relies on its parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it is almost completely naked apart from some fine down | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it is almost completely naked apart from some fine down | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it is able to reproduce | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, it has plumage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, it is able to reproduce | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, it is able to reproduce | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, it has plumage | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, their eyes may have opened but they are unable to leave the nest | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, their eyes may have opened but they are unable to leave the nest | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, their eyes may have opened but they are unable to leave the nest | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, they rely on their parents for feeding | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they rely on their parents for feeding | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, their eyes may have opened but they are unable to leave the nest | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they have just hatched from the egg | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, they have just hatched from the egg | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the nestling stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they have just hatched from the egg | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the juvenile stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, they have just hatched from the egg | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the fledgling stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the egg stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the hatchling stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they rely on their parents for warmth | entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, they rely on their parents for warmth | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the subadult stage, they fully independent | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult birds stage, they have adult plummage | not_entailment | indicator |
::stage egg:: eggs are laid by female birds in clutches ranging in number from just 1 for condors to as many as 17 for the grey partridge. Eggs are incubated by one or both parents for a period of time until the embryo inside has developed into a chick which is ready to hatch. A chick may have to work for hours or even days to break through the shell of its egg. Most birds have a small bump near the tip of their beak called an egg tooth to help them hatch. ::stage hatchling:: a hatchling is a bird that has just hatched and may be almost completely naked apart from some fine down. Hatchlings eyes may not open and it is unlikely to be able to care for itself. The term hatchling is usually used to refer to altricial chicks which are undeveloped and unable to move around. Hatchlings will stay in the nest for some time and will rely on their parents for feeding and to keep them warm. Precocial birds such as ducks and owls are relatively mature when they are born and are sometimes able to feed themselves and leave the nest soon after. ::stage nestling:: nestlings are chicks that are a few days old and are covered in soft down. There may be signs of flight feathers and nestlings eyes may have opened but they will be unable to leave the nest and will still rely on their parents for food and warmth. ::stage fledgling:: chicks that have developed flight feathers and wing muscles are known as fledglings. fledglings will have started to explore outside the nest but will still be under the care of their parents. Fledglings are fairly awkward and only able to fly for short distances but will be active and able to hop about. The length of time it takes for a chick to fledge varies between species. For example it takes 6 months before the chicks of the great frigatebird fledge and their parents feed them for a further 14 months. ::stage juvenile:: a juvenile bird is at the awkward teenage stage of being a bird. Juvenile birds will have left the nest and will be fully independent. juvenile bird will be in their first plumage and can look similar to adult birds although they may be duller with less defined markings. Out in the field it can be difficult to identify a juvenile bird and for most species of birds the length of time they are a juvenile is very short. ::stage subadult:: subadult birds are young birds that are older than juveniles but have still not developed adult plumage and are not sexually mature. Some birds such as house sparrows will become sexually mature at just a few months whereas larger birds such as golden eagles won't become sexually mature until they are 4 or 5 years old. The terms immature and subadult are interchangeable by many ornithologists although immature can be used to refer to any bird that isn't an adult. ::stage adult:: adult birds are sexually mature and are able to reproduce. adult birds will be in full adult plumage which may change depending on the season. Some birds have brighter plumage with clearer markings when in breeding season while in other birds, such as puffins, the shape and colour of their bills may change. | In the adult stage, they have adult plummage | not_entailment | indicator |
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