[Tweeters] Male/female colors

Rachel RachelWL at msn.com
Sun Mar 11 23:23:03 PDT 2007


A study came out a number of years ago that showed that the Blue Tit, a
European species always thought to be sexually monomorphic, shows
obvious sexual dimorphism in the ultra-violet range.  The birds
presumably can see the difference, but our human eyes can't.  It would
be interesting to know how common this is in birds.
 
Rachel Lawson
Seattle
RachelWL at msn.com
 
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