Philadelphia Turns Lights Out for Migrating Birds
The Philadelphia skyline is seen at dusk in this photo from November 2020. (Mark Makela/Getty Images) At a Glance Owners and tenants of downtown buildings are being asked to go dark from midnight to 6 a.m.The initiative comes after thousands of migrating birds were found dead in the city last fall.Experts estimate up to 988 million birds die in building collisions each year. It's lights out in Philadelphia for several weeks this year as skyscrapers go dark at night in...