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Re: CNN: how first birds flew

There is the lizard in Tazmania (?) that opens a frill when it runs.
This enables it to run on two legs and gain speed.  

A canada goose will open its wings as a weapon when charging an

Bears also will stick their arms out in an effort to look bigger.

Dann Pigdon wrote:
> Indeed. I'd have thought that the last thing you'd want to do if being
> pursued by a predator would be to stick your arms out. Wouldn't this
> actually slow you down? I've always thought that Archae's feet
> carried recurved claws adapted for perching and grasping. Wouldn't
> these also present a problem to a fast runner? Sort of like trying
> to run in golf shoes...