[Tweeters] Swifts Believe It or Not-Part 3

Larry Schwitters lpatters at ix.netcom.com
Thu Sep 15 17:34:07 PDT 2005

Mother nature takes care of her own.

> Swifts are physiologically adapted to spend much of their day flying 
> at high altitudes. Their hemoglobin is different from other bird 
> families and is designed to deliver high levels of oxygen at low 
> oxygen pressure.

>  (Campbell and Lack, 1985; Chantler and Driessens, 2000; Chantler, 
> 1999; Collins, 2001; Payne, 2003; Sibley and Ahlquist, 1990)

Larry Schwitters
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