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No they didn't.
So if birds didn't evolved from the dinosaurs, then birds have their own lineage apart from dinosaurs. So then evolution would say that they both share a common ancestor. So how did people came up with the idea that birds evolved from dinosaurs? That must be a misconception of what evolution says then.
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No.
Who are the ancestors? I'd like to know.
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Yes, by definition it's a bird. But "just" a bird? No.
How do you tell if it's a bird or not?
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Perhaps you could mention some of these "huge differences" and demonstrate the impossibility.
Or perhaps you prefer to indulge in vacuous rhetoric.
Birds cannot move their thigh bone so they must bend their knee while walking or running. Land creatures such as the theropods can move their thigh bone. Also birds required more oxygen than cold blooded animals and so to supply this need, birds have special lungs and supporting musculature. If birds have the same muscle structure as the dinosaurs and could move their thigh, their lungs would collapsed.
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If you have really been "looking at the subject for a while", how is it possible for you to write nonsense like this? ---
Because people are saying different things.
Edited by faith24, : No reason given.
Edited by faith24, : No reason given.