Dinosaur renaissance
Warm-bloodedness and activity levels. Robert Bakker argued that dinosaurs were warm-blooded and active animals, capable of sustained periods of high activity. His methodology was fiercely debated among scientists. Now it is thought that many dinosaurs had higher metabolic rates than living reptiles, but also that the situation is complex and varied. Many dinosaurs could have had intermediate metabolic rates. The discovery of feathers on dinobirds clinched the argument for the smaller theropods.