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Swifts Roost In Chimneys

Thompson Rivers Univ.

  What could bring crowds of people out after sunset on a September evening to stare at . . . a chimney? Swifts, of course! Scores of swifts form a funnel-shaped cloud above the right kind of chimney, then they begin their descent. First one, then a few more, then dozens, then hundreds swirl right down into the chimney. You can help Chimney Swifts and Vaux's Swifts by providing a roosting tower.