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 ...

“Terror birds” were giant, flightless, meat-eating creatures that roamed what is now South America for millions of years. As their threatening name suggests ...

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 ...