David Tipling / Emperor penguins {Aptenodytes forsteri} returning to their colony walking in a line across the sea ice, Weddell Sea, Antarctica

David Tipling / Pair of adult Emperor penguins {Aptenodytes forsteri} one feeding chick, Weddell Sea, Antarctica

DAVID TIPLING / Emperor penguin {Aptenodytes forsteri} brooding chick on feet Weddell Sea, Antarctica