Paleontologists have uncovered an exceptionally complete skull of a massive bird that lived 45 million years ago. This fossilized skull belonged to now-extinct Diatryma, a flightless bird that ...

The most common reasons birds have evolved to be flightless are a lack of predators or the development of an alternative ...

The emu is the second-largest living bird, and its eggs are the second-largest in the world. Emu eggs can weigh up to 3 pounds and measure up to 12 inches long. Cassowaries are large, flightless birds ...

The tallest native of Australian birds, Emus are flightless birds with a strong build. They were spread across both Europe and Australia before colonial settlements led to their extinction in the ...