On Feb 13, 9:18 am, "
wrote:
Hi Gang
This is a tough and pretty rigorous article on the flying
characteristics of todays' and yesterdays' large soaring birds with
comparisons to modern gliders (ASW21). Worth a read. (Originally
posted on the paraglider SFBAPA Group.)
Dave

http://www.pnas.org/cgi/reprint/104/30/12398

Really interesting article. Thanks for pointing it out.

I wonder how they got around in the winter. If the lift in the pampas
is like it is here in California in the winter time, they must have
done a lot of walking.

Larry