National Audubon Society Birds of North America: A Guide Review
10,000 Birds
JUNE 1, 2021
If you remember that the first edition of Sibley was published with “National Audubon Society” on the cover, raise your hand. Bald Eagle, for example, is still said to be “formerly more widespread” though the range map shows expansion. Plate 28 from Audubon Bird Guide, Eastern Land Birds, by Richard H.
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