Long before big cats, terror birds reigned as apex predators. Here’s how these flightless birds hunted, and why they went ...

The fossil of a giant carnivorous bird has been found in Patagonia, marking the largest-known avian skull to have been found. The fearsome fossil of a 10-foot-tall ...

LOS ANGELES — A teenager in Argentina has discovered the fossil skull of the biggest bird ever found — a swift, flightless predator 10 feet tall that pursued its prey across the steppes of Patagonia ...

The mangled leg of a prehistoric predator suggests it may have been killed by an even bigger beast 13 million years ago, boffins believe. Terror birds — a ...