if dinosaurs were reptiles and cold blooded, what would cause the evolutionary step to become warm blooded and birds as it’s said that birds are the closest living relatives of dinosaurs.

Question

if dinosaurs were reptiles and cold blooded, what would cause the evolutionary step to become warm blooded and birds as it’s said that birds are the closest living relatives of dinosaurs.

In: Biology

Answer 1

Some dinosaurs were warm-blooded, possibly the direct ancestors of the birds to be specific.

In fact, there is still a warm-blooded lizard alive today. The Argentinian Tegu is partially endothermic.