National Audubon Society Birds of North America: A Guide Review
10,000 Birds
JUNE 1, 2021
Interestingly, Chestnut-collared Longspur does appear under its brand-new official name, Thick-billed Longspur, though the description underneath uses the old name. I am particularly happy to see that the bird communication section includes recent research on singing female birds. These are all informative and current.
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