>I’ve been kind of interested in the discussion of ‘birds are dinosaurs/birds are not dinosaurs’:
The correct answer is most dinosaurs were birds. Birds didn’t develop from them, they were just a variety of bird. The few samples of dinosaurs skin we have all resemble chicken skin, not reptile scales. They were warm-blooded, had feathers, and probably had hollow bones.
That’s interesting. Another article, regarding how they breathed:
https://www.livescience.com/306-dinosaurs-breathed-birds.html
I think this is the original article that got me interested in the question:
https://www.sciencedaily.com/releases/2009/06/090609092055.htm
https://en.wikipedia.org/wiki/John_Ruben