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Re: Vulture warm up
Couldn't be that they are just strechting muscles after a period of immobility,
just like cats and dogs do when they wake up?
Luis Oscar Romero, email@example.com
----- Receiving the following content -----
Time: 2009-05-06, 19:15:09
Subject: Re: Vulture warm up
No, I don't think we can make that assumption -- according to the photos,
they are also doing it on cloudy days without much radiant heat input
available to them. Perhaps they are doing it to cool off ? After all,
folded wings do make pretty good insulators and can trap a lot of body
----- Original Message -----
Sent: Wednesday, May 06, 2009 3:24 PM
Subject: Vulture warm up
> Listers --
> Here are some very nifty pix taken very recently by a friend of a friend
> in Fort Collins, Colorado.
> They were taken in the morning, so can we assume the birds had their wings
> spread to warm up? If this is so, what does it say about a vulture's
> ability to regulate its body temp? (I don't think many other types of
> birds engage in this behavior.) Does this behavior (the urge -- or need --
> to warm up in the sun) say anything about your typical Mesozoic theropod?
> Or are vultures a special case due to their scavenging habits (especially
> low metabolism, maybe???)?
> -- Donna Braginetz