Fall Migration in Costa Rica- Six Things I Have Learned
10,000 Birds
SEPTEMBER 26, 2020
The muted colors of Blackburnians, Black-throated Greens, and Blackpolls fit right in with the dull greens and golden highlights of the early fall vegetation. In Costa Rica, they become another sort of animal. This being an uncommon species in upstate New York, I appreciate having an abundance of Cliff Swallows to look at.
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