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EvC Forum ⇒ Science Forums ⇒ Biological Evolution ⇒

What drove bird evolution?

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PaulK
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Message 31 of 145 (124436)
07-14-2004 9:57 AM 		Reply to: Message 26 by arachnophilia
07-14-2004 12:33 AM

Re: Birds Evolving??
I suspect that the "system birds use to rotate flight feathers on upstrokes" may refer to the swivelling wrist joint which is found in no other living vertebrates. It is however found in the Maniraptoran dinosaurs and is one of the major lines of evidence supporting the dinosaurian ancestry of birds.
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