Slowing down Chimney Swifts
10,000 Birds
OCTOBER 18, 2011
Here in the southeast, we get to watch as the flocks of sickle-winged midge tyrants funnel back south again every fall, pausing to congregate most evenings in the old smokestacks that tower above the empty tobacco factories in downtown Durham, North Carolina. It was the largest all-volunteer effort to study a migratory bird ever undertaken.
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