2011 Bears Breeding Science 
10,000 Birds
MAY 21, 2020
Depending on your particular interest, opt for March/April (spring migration), May/June (breeding season), August to October (autumn migration), or November/December when waterbird migration reaches its peak. Raphael Nussbaumer is a keen ornithologist who enjoys combining his passion for birds with computer science background.
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. Press, 2011, cited as “RTP to Paul Brooks, March 6, 1945, Peterson Institute.” Audubon guides to birds have been around since 1946.
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