A Colombian rancher has discovered a fossilized bone that points to the existence of a giant terror bird species. The fossil, an enormous leg bone found in the ...

A study of a bizarre prehistoric bird's fossilized remains has uncovered fascinating new details regarding its behavior. Living around 120 million years ago, the species, Longipteryx chaoyangensis, is ...

The Terror Birds of South America may be the most unusual predators ever to roam the face of the Earth. Until about five million years ago, the continent of South ...