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The emperor penguin, Aptenodytes forsteri, is one of only two species of penguin that inhabit the Antarctic continent. Adelie penguins breed there in summer; emperor penguins breed in winter.
Males and females are indistinguishable until it comes time for the male to assume his paternal duties. The female lays one egg; the father and mother can fit only one egg (and later one chick) on their feet. The father fasts through the winter, while he is incubating the egg. He folds the egg on top of his feet and covers it with his skin for two months.
The emperor penguin feeds on shoaling fish, small crustaceans and squid. Most emperor colonies are located on what's called fast ice, which is frozen sea ice.
David McEown