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 ...

(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 ...

Skeleton of the terror bird Titanis walleri at the Florida Museum of Natural History. (Amanda via Wikimedia Commons / Creative Commons Attribution 2.0 Generic) (CN ...

The end of a terror bird’s left tibiotarsus, a lower leg bone in birds equivalent to that of a human tibia or shin bone, dates back to the Miocene epoch around 12 ...

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 ...

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This giant bird lived among primates, hoofed mammals, giant ground sloths and armadillo relatives, glyptodonts, that were the size of cars. Today, the seriema, a long-legged bird native to South ...