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Re: Phylogeny of Maniraptora
James R. Cunningham <firstname.lastname@example.org> wrote:
I think its fair to say that passive gliding is far more aerdynamically
challenging than active flapping. Biomechanically, I agree with you.
But evolutionary improvements in an early passive glider would appear to
trend away from the improvements needed by an active flapper.
I've heard this argument before. I was under the impression that the
Norbergs (among others) had demonstrated that a glider could start flapping
without being detrimental to gliding.
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