The Great Auk (Pinguinus impennis) was aflightless bird that resembled a present-day penguin. Like the penguin, it was a powerful swimmer, stored fat for warmth, nested in dense colonies, and mated for life; however, it also had a heavy hooked beak. It could grow to almost three feet in height and lived in the north Atlantic ocean.
Great Auk (1852)
Extinct animals in the world 