By Wm. Mueller - -
Ornithology, ecology, environmentalism, and our life in the natural world
Wednesday, September 10, 2014
excellent video of Chimney Swifts at autumn roost in Janesville WI
To see the evening pre-roost behavior of Chimney Swifts at and near their roost chimney at an elementary school, go to this link. Thanks to Jodi Denker of Janesville for sharing this video. Total number of swifts entering the chimney: 860.