These birds seriously look as terrifying as their name implies.

BBC – A 90%-complete “terror bird” skeleton found on an Argentinean beach suggests these big-beaked predators had good low-frequency hearing and deep voices.

It is the most complete skeleton ever discovered for one of these menacing beasts, and represents a new species.

Scientists have even been able to reconstruct the shape of its inner ear.

This offers clues about the animal’s hearing, which was probably lower than that of modern birds and suggests they used low-pitched calls to communicate.

The find is reported in the Journal of Vertebrate Paleontology.

Read more: BBC