A number of people have asked about this--this came out last week.
Dave
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Sent: Wednesday, July 01, 2009 1:22 PM
To: Russell, David E. Dr.; [log in to unmask]
Subject: Toxic molecule may help birds "see" north and south | News Bureau | University of Illinois
Toxic molecule may help birds "see" north and south | News Bureau | University of Illinois
http://news.illinois.edu/news/09/0622birds.html
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