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. There are several species, such as California Condor, for which new material had to be written (California Condor is called “nearly extinct” in the older title and not included).
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