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ing insects that make up the majority of their diet. A sharp chirping or ticking call accompanies the swifts’ flight.
At rest, the adult is sooty gray to black with the throat slightly lighter or even silvery gray in color. Male and female are identical in appearance. Both the claws and tail bristles are used to cling to rough vertical surfaces.
Swifts are unable to perch or stand upright as songbirds do but are equipped to roost clinging to vertical surfaces.
I recently spoke with a reader who has heard chirping in her chimney that started a few weeks after her chimney cover was blown off. Rest assured that the chirping will only be for a few weeks and I hope your questions are answered here.
Chimney Swifts winter in the Amazon Basin of Peru. They arrive in the United States in late March and are gone by early November. Nesting begins in May and can continue into August.
They produce one brood of offspring before gathering in late summer to begin their return to Peru.
These birds are custom-made for high-speed life on the wing, but they are not as agile as swallows, especially at low speed. Chimney Swifts are known to drink on the wing and sleep while in flight in something called an “aerial roost”.
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