[birdky] new findings re: bird migration

The Economist, Nov 3, carried an article regarding the fact that part of the 
avian compass needle has been tentatively identified by German scientists. 
Seems that birds have a protein called cryptochromes in their eyes so that they 
can tell how their heads are aligned with respect to the earth's field, and 
hence which direction to set off. For details see this article or the Public 
Library of Science. These journals can be accessed through the data bases of 
your local libraries.

Michael Hamm

Michael F.Hamm
Ewing T. Boles Professor of History
Centre College
600 West Walnut Street
Danville, Kentucky 40422
859-238-5264

CENTRE COLLEGE
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http://www.centre.edu

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