National Audubon Society Birds of North America: A Guide Review
10,000 Birds
JUNE 1, 2021
The rest of Mexico is not included, nor is Hawaii (which isn’t in North America, after all, but has been accepted as part of the American Birding Association area). It does seem like the order is concurrent with the 61st Supplement, which came out in 2020, but Northwestern Crow is included as a full species. GUIDE COVERAGE.
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