Add to ORKGWe report on the adoption of a Southern Giant Petrel Macronectes giganteus chick by a breeding pair on 25 de Mayo Island (King George Island), South Shetland Islands, Antarctica. Our observations showed both chicks received similar amounts of food, but there were differences in their growth rates that could be explained by their gender. After the third week of adoption, aggressive behaviors were common between chicks, usually expressed through regurgitation. This resulted in a low rate of growth in both chicks. Neither chick fledged, and both were found dead near the colony seven weeks after adoption. The constant fights between them could be one of the causes of their death, particularly if death resulted from excessive regurgitation. Alth...
Brood-rearing capabilities and their relation to the problem of clutch-size were investigated in two...
The development of homeothermy was studied in chicks of five species of sub-Antarctic burrowing petr...
Lack (1947) proposed that, in nidicolous birds, clutch-size has evolved to correspond, on average, t...
Many species of gadfly petrel (genus Pterodroma) are threatened or endangered, including, in New Zea...
Many Pterodroma species are threatened, and translocations to predator-free islands are desirable fo...
Crested screamers, a unique, mainly terrestrial avian species native to South America, are known to ...
The breeding biology and population dynamics of the two species of giant petrels, Macronectes halli ...
Burrow competition between the critically endangered Chatham petrel (Pterodroma axillaris) and the l...
Many species of gadfly petrel (genus Pterodroma) are threatened or endangered, including, in New Zea...
In crested penguins, Eudyptes spp., the first-laid (A) egg is smaller than the second-laid (B) egg a...
Infanticide and nonfatal aggression by adults toward unfamiliar chicks have been widely reported in ...
Fil: Casaux, Ricardo Jorge. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección...
Crested penguins (genus Eudyptes) have a peculiar hatching pattern, with the first-laid egg (A-egg) ...
Giant petrels Macronectes spp. are not thought to be important predators of albatross chicks, althou...
Petrels are the most numerous bird group in the waters around Antarctica. During three seasons, Jero...
Brood-rearing capabilities and their relation to the problem of clutch-size were investigated in two...
The development of homeothermy was studied in chicks of five species of sub-Antarctic burrowing petr...
Lack (1947) proposed that, in nidicolous birds, clutch-size has evolved to correspond, on average, t...
Many species of gadfly petrel (genus Pterodroma) are threatened or endangered, including, in New Zea...
Many Pterodroma species are threatened, and translocations to predator-free islands are desirable fo...
Crested screamers, a unique, mainly terrestrial avian species native to South America, are known to ...
The breeding biology and population dynamics of the two species of giant petrels, Macronectes halli ...
Burrow competition between the critically endangered Chatham petrel (Pterodroma axillaris) and the l...
Many species of gadfly petrel (genus Pterodroma) are threatened or endangered, including, in New Zea...
In crested penguins, Eudyptes spp., the first-laid (A) egg is smaller than the second-laid (B) egg a...
Infanticide and nonfatal aggression by adults toward unfamiliar chicks have been widely reported in ...
Fil: Casaux, Ricardo Jorge. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección...
Crested penguins (genus Eudyptes) have a peculiar hatching pattern, with the first-laid egg (A-egg) ...
Giant petrels Macronectes spp. are not thought to be important predators of albatross chicks, althou...
Petrels are the most numerous bird group in the waters around Antarctica. During three seasons, Jero...
Brood-rearing capabilities and their relation to the problem of clutch-size were investigated in two...
The development of homeothermy was studied in chicks of five species of sub-Antarctic burrowing petr...
Lack (1947) proposed that, in nidicolous birds, clutch-size has evolved to correspond, on average, t...