Philadelphia calls for 'lights out' after skyscrapers cause hundreds of bird deaths

Lights Out Philly program seeks to limit lighting at night as millions of migrating birds pass through

The lights of Philadelphia may not shine as bright in the coming weeks as a coalition in the City of Brotherly Love tries to prevent millions of migrating birds that pass through twice a year from slamming into skyscrapers and crashing to the sidewalk.

Bird Safe Philly on Thursday announced the Lights Out Philly initiative, a voluntary program in which many external and internal lights in buildings are turned off or dimmed at night during the spring and fall.