Why do birds collide with buildings?

Unfortunately, birds are in decline throughout the world and here in the North America our wild bird population is estimated to have declined by 29% since 1970 which translates to a loss of one in every four birds. One of the reasons why birds are in decline is because they frequently collide with buildings especially when they are migrating and most of these collisions are fatal. Collisions with buildings are now estimated to K*ll over a billion birds a year in the U.S. and up to 25 million annually in Canada. This talk describes why these collisions occur, why we should be concerned about them, and what is being done to prevent them from occurring in the Philadelphia region by Bird Safe Philly.

Register here: https://libertybirdalliance.org/event/liberty-bird-alliance-program-april-2026/

Keith Russell is the Program Manager for Urban Conservation for Audubon Mid-Atlantic. Based in Philadelphia at the Discovery Center, his work has involved education, monitoring, research, advocacy, and on the ground conservation to improve conditions for birds in ways that have also broadened engagement in the environmental movement. Areas of special focus include bird migration, bird collisions with human structures, birds and nocturnal lights, native plants, and the history of birds in Philadelphia.

You may also like the following events from Liberty Bird Alliance:

• Next month, 10th March, 07:00 pm, Studying and Conserving Birds through Banding: National and Local Efforts in Fort Washington