Phorusrhacidae - terror birds

There were about 25 species in this family of flightless birds. They are all extinct now. They were once found in South America.

Terror birds had huge heads; strong hooked bills; tiny wings; and large, powerful legs with clawed toes.

Terror birds have been extinct for at least one million years. They were 3-9 feet tall and weighed as much as one ton. Terror birds were meat-eating predators and used their powerful bills to strike and kill their prey.