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Re: hovering diversity (was Re: Ornithurine diversity)
> >> I once watched a small falcon [...] It literally
> hung in the air
> >> without beating it's wings at all by facing
> into the wind
> And Jim Cunningham (email@example.com) responded:
> > Facing into the wind will not help the animal to
> maintain altitude.
> > Something else must have been going on as well, in
> order to provide
> > energy for hovering at constant altitude.
> I see it
> all the time on the bluffs above the beaches near Santa
In this case the "something else going on" is the way the bluffs alter the
airflow such that there is an upward component/lift