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The identification of part of the fossilized remains of a so-called "terror bird" species in South America has given researchers new insight into the apex predators ...

When a large asteroid hit Earth 66 million years ago, not all the dinosaurs went extinct. Birds, feathered dinosaurs that have thrived since the Jurassic, survived—and some of these birds were more ...

5 million years ago, a predator made its way onto the coastal plains of North America. About 5 million years ago, a new predator made its way from the south and onto the coastal plains of North ...

True to their nickname, terror birds (Phorusrhacidae) are known as one of the largest and also the most fearsome birds to ever live. These were flightless birds with ...

Millions of years ago, the most fearsome predator in South America wasn't Tyrannosaurus rex or a raging mammoth - but a flightless bird with an enormous beak. The ...

(CNN) — Millions of years ago, long-legged, big-beaked, meat-eating “terror birds” stalked the Americas. The imposing creatures ruled the roost as top predators ...