Re: Sierra Nevada Birds Move In Response To Warmer, Wetter Climate

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eeek

Sierra Nevada Birds Move In Response To Warmer, Wetter Climate
October 04, 2009 02:01PM

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ScienceDaily (Oct. 4, 2009) — If the climate is not quite right, birds will up and move rather than stick around and sweat it out, according to a new study led by biologists at the University of California, Berkeley.

http://www.sciencedaily.com/releases/2009/09/090914151625.htm

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Vince

Re: Sierra Nevada Birds Move In Response To Warmer, Wetter Climate
October 04, 2009 03:55PM

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Might by why, after hundreds of millions of years of evolution, birds have wings.

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eeek

Re: Sierra Nevada Birds Move In Response To Warmer, Wetter Climate
October 04, 2009 04:31PM

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Quote
Vince
Might by why, after hundreds of millions of years of evolution, birds have wings.

I'm sure it's only one of many reasons.

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bpnjensen

Re: Sierra Nevada Birds Move In Response To Warmer, Wetter Climate
October 05, 2009 08:12AM

Registered: 15 years ago
Posts: 179

Quote
eeek

Quote
Vince
Might by why, after hundreds of millions of years of evolution, birds have wings.

I'm sure it's only one of many reasons.

Yeah, I think most birds have wings because it has been favorable to them in quite a few different ways...

In fact, the only places where birds **do not** have functional wings is where they don't really need them to avoid serious enemies or weather changes. Like kiwis, ostriches, emus, cassowaries, moas, dodos and so forth. In these cases, since the advent of flying dinosaurs, the evolution of wings for these creatures has been "backwards" so to speak, or more like "convergent evolution" where species at variance have grown to be more like each other - in these few cases, birds have perhaps grown to be like other more earthbound critters.