King penguin feeding a chick (Aptenodytes patagonicus), St. Andrews Bay, South Georgia Island, Polar Regions

King penguin (Aptenodytes patagonicus) rookery, St. Andrews Bay, South Georgia Island, Polar Regions

King penguin feeding a chick (Aptenodytes patagonicus), St. Andrews Bay, South Georgia Island, Polar Regions

Gentoo penguin chick (Pygoscelis papua papua), Port Lockroy, Antarctic Peninsula, Antarctica, Polar Regions

King penguin (Aptenodytes patagonicus) chicks (okum boys) at nesting colony at Salisbury Plain, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) chicks (okum boys) at nesting colony at Salisbury Plain, South Georgia, Polar Regions

Gentoo penguin (Pygoscelis papua) adult with chicks on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chick at Jougla Point, Wiencke Island, Antarctica, Southern Ocean, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguin (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguin (Aptenodytes patagonicus), close up of okum boy chick, Gold Harbour, South Georgia, UK Overseas Protectorate, Polar Regions

A Black Browed Albatross (Thalassarche melanophris) chick sitting on a nest in a mixed nesting colony of albatross's and Rockhopper Penguins

A Black Browed Albatross (Thalassarche melanophris) chick sitting on a nest in a mixed nesting colony of albatross's and Rockhopper Penguins

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.

A parent and chick Adelie penguin (Pygoscelis adeliae) on Paulet Island on the Northeast side of the Antarctic Peninsula.

Juvenile King Penguin (Aptenodytes patagonicus) in colony on South Georgia Island, southern Atlantic Ocean.

Gentoo penguin (Pygoscelis papua) parent feeding chicks on Petermann Island near the Antarctic Peninsula.

Chinstrap penguin (Pygoscelis antarctica) chick mouthing guano chip on Devil Island near the Antarctic Peninsula.

Chinstrap penguin (Pygoscelis antarctica) parent and chick at breeding colony on Useful Island near the Antarctic Peninsula

Guano-covered chinstrap penguin (Pygoscelis antarctica) chick at breeding colony on Useful Island near the Antarctic Peninsula

Chick in colony on Bleaker Island. Rockhopper Penguin (Eudyptes chrysocome), subspecies Southern Rockhopper Penguin (Eudyptes chrysocome chrysocome). South America, Falkland Islands, January

Chick in colony on Bleaker Island. Rockhopper Penguin (Eudyptes chrysocome), subspecies Southern Rockhopper Penguin (Eudyptes chrysocome chrysocome). South America, Falkland Islands, January

Chick with adult on Bleaker Island. Rockhopper Penguin (Eudyptes chrysocome), subspecies Southern Rockhopper Penguin (Eudyptes chrysocome chrysocome). South America, Falkland Islands, January

Chick with adult on Bleaker Island. Rockhopper Penguin (Eudyptes chrysocome), subspecies Southern Rockhopper Penguin (Eudyptes chrysocome chrysocome). South America, Falkland Islands, January

Colony with chicks in creche and guards on Bleaker Island. Rockhopper Penguin (Eudyptes chrysocome), subspecies Southern Rockhopper Penguin (Eudyptes chrysocome chrysocome). South America, Falkland Islands, January

Rockhopper Penguin (Eudyptes chrysocome), subspecies western rockhopper penguin (Eudyptes chrysocome chrysocome). Colony on cliff with creche. South America, Falkland Islands, January

Colony Of King Penguins (Aptenodytes Patagonicus) And Juveniles, Antarctica

Juvenile King Penguins (Aptenodytes Patagonicus) Standing At The Water's Edge

A nursery group of young penguin chicks, with thick grey fluffy coats, grouped beneath a pinnacle of ice, Weddell Sea, Snow Hill Island, Antarctica

An adult Emperor penguin and a smaller fluffy penguin chick spreading its flippers out, Weddell Sea, Snow Hill Island, Antarctica