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Re: Cost in Aquatic Birds (short)
David Marjanovic wrote:
> Might negative lift production become interesting at low densities? Adult
> birds (songbirds, probably) are given 0.8 (g/cm³) in the literature...
I think maybe so. Possibly in an amount loosely about 1/5 that that it plays a
role in flight in air? Personally, I'm clueless about the average density of
birds who are prone to 'fly' underwater.Jim