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Re: New bird /pterosaur flight paper in PLoS ONE




--- On Wed, 4/29/09, jrc <jrccea@bellsouth.net> wrote:

> Note that sailplanes with wingspans, wing areas, aspect
> ratios, and gross weights similar to those of the largest
> pterosaurs are repeatedly capable of soaring non-stop for
> hundreds of kilometers on an average day, and they don't
> have the ability to flap at all.

Actually, they cover that -- "The present study does not deny the possibility 
that they (the large pterosaurs) might rely on warmed rising air of thermals..."

Don