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.
Swifts Roost In Chimneys
![](https://npr.brightspotcdn.com/dims4/default/7dc93c0/2147483647/strip/true/crop/285x285+0+0/resize/880x880!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Flegacy%2Fsites%2Fkplu%2Ffiles%2F201409%2Fchimney-swift-roost-thompson-rivers-univ-285.jpg)
Thompson Rivers Univ.