A Stunned Ovenbird found by a NYC Bird Alliance collision monitoring volunteer. Photo: Winston Qin| NYC Bird Alliance
Every spring and fall, billions of birds migrate through the US, mostly under the cover of darkness. This mass movement of birds must contend with a dramatically increasing but still largely unrecognized threat: light pollution.| BirdCast
Large numbers of birds died in collisions with glass and structures while major migration was occurring in the Chicago area on the night of 4-5 October 2023. Turn off your lights, make your windows bird friendly!| BirdCast