Millions of years ago, several species of giant birds called "mega penguins" roamed the Earth — and some of them stood taller ...

Emperor penguins are the tallest and heaviest penguin species in the world and can be found swimming, playing, and raising ...

WASHINGTON - Some ancient penguins may have been twice as big as today's Emperor penguin but they lacked the dashing tuxedo. Researchers have unearthed remains of a nearly 5-foot-tall penguin that ...