66 million years ago an asteroid struck Earth. All dinosaurs died – except the birds. Here is why.

66 million years ago an asteroid struck Earth. All dinosaurs died – except the birds. Here is why.

The birds survived – and later grew into giants. Ice Age giants – the great birds of prey we lost →

After the dinosaurs, birds became the top predators of South America. Terror Birds – the giant hunters of ancient South America →

The asteroid also ended the pterosaurs – and the birds inherited the skies. Pterosaurs – rulers of the prehistoric skies →