National Audubon Society Birds of North America: A Guide Review
10,000 Birds
JUNE 1, 2021
I am particularly happy to see that the bird communication section includes recent research on singing female birds. Press, 2011, cited as “RTP to Paul Brooks, March 6, 1945, Peterson Institute.” Plate 28 from Audubon Bird Guide, Eastern Land Birds, by Richard H. The grand total is 817 species! Dunlap, Oxford Univ.
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