Last I heard dinosaurs are basically birds.
Birds are hot blooded.
And vice versa, Birds are basically Dinosaurs. Hollow boned, warm blooded, and covered in insulating feathers. If the planet was about ten degrees warmer with CO2 levels several times higher than now (in that order, by the way, Mr. Gore) they could still be growing to gargantuan size.
"Frankly, there's a lot of museum politics involved in this, a lot of careers committed to a particular point of view even if new scientific evidence raises questions," Ruben said. In some museum displays, he said, the birds-descended-from-dinosaurs evolutionary theory has been portrayed as a largely accepted fact, with an asterisk pointing out in small type that "some scientists disagree."