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. Color-coded page headings denote bird groups, matched by color-coded bird silhouette icons located midway down the edge of the page.
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