Feather Colors Affect Bird Physiology, Barn Swallows S

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Subject:	Feather Colors Affect Bird Physiology, Barn Swallows S
From:	Andrew Taylor <>
Date:	Thu, 12 Jun 2008 10:11:07 +1000

...  A team of researchers, including one from Arizona State
University, found in an experiment that involved artificially
coloring the breast feathers of male barn swallows the testosterone
levels of the manipulated birds soared in a short period of time. ...
"The experimental manipulation didn't just improve the males' looks
in the eyes of the females, it actually changed their body chemistry,"
said lead author Safran.  ...

More at
http://www.sciencedaily.com/releases/2008/06/080602121302.htm

Andrew

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