1116-52885 - Close-up portrait of an oystercatcher bird (Haematopus) standing on a rock covered in yellow, orange colored seaweed, on a summer day in Prince William Sound, Alaska, United States of America
1174-10744 - A fork tailed drongo, Dicrurus adsimilis, perches on a branch, looking out of frame, blue sky background, Londolozi Game Reserve, Sabi Sands, Greater Kruger National Park, South Africa
1116-51933 - Portrait of a southern yellow-billed hornbill (Tockus leucomelas) perching in profile on a bush. It has mottled black and brown feathers, a white head and a yellow beak, taken at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia
1116-51938 - Portrait of a male, common ostrich (Struthio camelus) lowering head and walking through the long grass at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia
83-13259 - Black-headed gull (Chroicocephalus ridibundus) in winter plumage in this popular coastal town, Aberaeron, Ceredigion, Wales, United Kingdom, Europe
1116-48055 - Close-up of King Penguin's (Aptenodytes patagonicus) head looking up, showing detail of coloured plumage, Volunteer Point, Falkland Islands
1174-5057 - A scarlet-chested sunbird, Chalcomitra senegalensis, perches on a candelabra aloe flower, Aloe arborescens, looking away, Londolozi Game Reserve, Sabi Sands, Greater Kruger National Park, South Africa
1174-5035 - A side profile of a Marabou stork, Leptoptilos crumenifer, pink head, Londolozi Game Reserve, Sabi Sands, Greater Kruger National Park, South Africa
1174-5024 - Three common ostriches, Struthio camelus, stand with their heads up and bent down, male and female, Londolozi Game Reserve, Sabi Sands, Greater Kruger National Park, South Africa
1112-3151 - Adult male magnificent frigatebird (Fregata magnificens), San Gabriel Bay, Espiritu Santo Island, Baja California Sur, Mexico, North America
764-5121 - Black-faced sandgrouse (Pterocles decoratus), male, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa
641-12967 - World's largest colony of Frigate Birds (Fregata magnificens) in the lagoon, Barbuda, Antigua and Barbuda, Leeward Islands, West Indies, Caribbean, Central America
641-12966 - World's largest colony of Frigate Birds (Fregata magnificens) in the lagoon, Barbuda, Antigua and Barbuda, Leeward Islands, West Indies, Caribbean, Central America
989-210 - Black-headed gull (Larus ridibundus) in winter plumage calling from tree branch, St. James's Park, London, England, United Kingdom, Europe
995-313 - Black-Headed Gull (larus ridibundus) taking off from ice on a frozen pond in Glasgow city centre . Glasgow, Hyndland Park, Argyll, Scotland, UK
995-315 - Black-Headed Gull (larus ridibundus) taking off from ice on a frozen pond in Glasgow city centre . Glasgow, Hyndland Park, Argyll, Scotland, UK
995-377 - Black Headed Gull (Larus ridibundas) and Herring Gull (Larus argentatus) juvenile taking off from pond with winter plumage . Maryhill Canal, Strathclyde, Scotland, UK
995-310 - Black-Headed Gull (larus ridibundus) taking of from a city pond in winter, female tufted duck in fore ground. Glasgow, Hyndland Park, Argyll, Scotland, UK
995-312 - Black-Headed Gull (larus ridibundus) taking of from ice on a frozen pond in Glasgow city centre front on view. Glasgow, Hyndland Park, Argyll, Scotland, UK
995-314 - Black-Headed Gull (larus ridibundus) taking off from ice on a frozen pond in Glasgow city centre . Glasgow, Hyndland Park, Argyll, Scotland, UK
995-311 - Black-Headed Gull (larus ridibundus) taking of from ice on a frozen pond in Glasgow city centre front on view. Glasgow, Hyndland Park, Argyll, Scotland, UK
979-7139 - Chinstrap penguin (Pygoscelis antarctica) chick head detail at colony on Useful Island near the Antarctic Peninsula. There are an estimated 2 million breeding pairs of chinstrap penguins in the Antarctic peninsula region alone, perhaps as many as 7.5 million breeding pairs in all of Antarctica. Their name derives from the narrow black band under their heads which makes it appear as if they are wearing black helmets, making them one of the most easily identified types of penguin. Other names for them are "Ringed Penguins", "Bearded Penguins", and "Stonecracker Penguins" due to their harsh call. They grow to 68 cm (27 in). The average adult weight of a Chinstrap Penguin is 4.5 kg (10 lbs). Weight can range from 3 to 6 kg (6.6-13.2 lbs), with males being slightly larger and weight varying based on where the penguin is in the breeding cycle. Their diet consists of krill, shrimp, and fish. On land they build circular nests from stones, and lay two eggs, which are incubated by both the male and the female for shifts of five to ten days. They can also breed on icebergs, though they prefer non-icy conditions. The chicks hatch after about 35 days, and have fluffy gray backs and white fronts. The chicks stay in the nest for 20?30 days before they go to join a creche. At around 50?60 days old, they moult, gaining their adult plumage and go to sea. The Chinstrap Penguin was first described by German naturalist Forster in 1781. Its specific epithet was often seen as antarctica, however a 2002 review determined the genus Pygoscelis was masculine, and hence the correct binomial name is Pygoscelis antarcticus.