[va-richmond-general] UK study: How birds know when to sing to attract mates

http://news.bbc.co.uk/1/hi/scotland/edinburgh_and_east/7305469.stm
   
  Excerpt from article:
   
              Research finds birdsong trigger 

                   Japanese quail were observed under varying amounts of light


  Birds know to sing in the spring because of hormones triggered by longer 
days, researchers have found. 
   
  Teams from the Roslin Institute near Edinburgh and Nagoya University in Japan 
have identified how part of a bird's brain is affected by seasons.      
Scientists found cells near the pituitary gland release a hormone in the spring 
in readiness for mating. 



"Hope is the thing with feathers 
  That perches in the soul 
  And sings the tune without the words 
  And never stops at all." 
  --Emily Dickenson 
   
  Mercy for birds, wild birds
  http://www.thepetitionsite.com/1/no-vulture-culling
   
  Justice for unjust killing of wildlife
  
http://www.thepetitionsite.com/1/censure-and-sanction-tripp-isenhour-for-killing-of-red-shouldered-hawk
   
  The Parakeet Perch - Budgie community
  http://groups.yahoo.com/group/TheParakeetPerch/

       
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