Behavior
Like all swifts, the Chimney Swift is incapable of perching; instead, it clings to vertical surfaces.
The full population migrates seasonally in large flocks, but in mild winters some may overwinter in Florida. This species has occurred as a very rare vagrant to western Europe, Great Britain or Pribilof Island, Alaska.
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—Bruno Bettelheim (20th century)
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—Robert Havighurst (20th century)