TIL that Chicago skyscrapers have to keep their lights off at night twice a year to keep the 5 million migrating birds from becoming disoriented and dying : r/todayilearned

Turning off building lights at night cuts bird collisions, study shows, Birds

Solutions — Bird Friendly Chicago

McCormick Place Should Shut Off Lights, Close Blinds Every Night For Migrating Birds, Advocates Say

Chatty birds may put their friends at risk of colliding with buildings, NOVA

Philadelphia dims its skyline in an effort to save migrating birds, following a 'mass collision

Chicago Reader print issue of February 23, 2023 (Vol. 52, No. 10) by Chicago Reader - Issuu

Lights Out Chicago — Chicago Bird Alliance

Chicago's annual list of most endangered buildings includes two historic skyscrapers the federal government wants to demolish – Chicago Tribune

Why do buildings under construction leave their lights on constantly? - Quora

Migratory birds: Chicago high-rise residents urged to turn off lights, draw blinds after 11 p.m. during bird migration season - ABC7 Chicago

More than 1,000 birds killed in one night after hitting the same Chicago building

Turning off lights can save migrating birds f