Birds evolved from a small raptor like theropod.

I also got a chance to go to the American Museum in New York, which helped my interest.

In 1941 Richard Owen said that the dinosaurs were almost hot blooded.

Feathers predate birds.

To me it seems that the warm blooded dinosaurs replaced advanced mammal ancestors that were warm blooded, also.

I also discovered the only complete Brontosaurus skull.

Also, while I was at Yale, I had a job teaching kids at the museum.