2011 Bears Research Science 
10,000 Birds
MARCH 18, 2011
UNLESS that is you get yourself down to the internationally-renowned Tambopata Research Centre in southern Peru where literally hundreds of macaws (and other parrots) congregate around a 50 meter high clay bank. The clay consumed at the colpa contains chemicals that bind with these ingested alkaloids thus neutralizing their toxicity.
10,000 Birds
JUNE 1, 2021
The first guide bearing the National Audubon Society imprint was Audubon Bird Guide; Eastern Land Birds , written by Richard Hooper Pough, and illustrated by Don Eckelberry. I am particularly happy to see that the bird communication section includes recent research on singing female birds. These are all informative and current.
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