Every year during the spring and fall months, tens of millions of birds pass through cities such as Philadelphia. While lights can throw birds off their migration paths, bird fatalities are more directly caused by the amount of energy the birds waste flying around and calling out in confusion. The exhaustion can then leave them vulnerable to other urban threats. 

Simply turning your lights off from midnight until 6am during the spring migration from April 1 through May 31, and during the fall migration from August 15 through November 15 can potentially reduce bird collision death by up to 80%. For more information about Lights Out in the Philadelphia area, check out this fact sheet from Bird Safe Philly. You can also visit this page on Audubon’s website to learn more about nationwide Lights Out efforts.

The Bird Migration Explorer is a tool developed by the National Audubon Society, which tracks the heroic annual journeys made by over 450 bird species nationwide. Click below to learn more about our local migratory species, along with their locations and the conservation challenges they face.