Wildlife

Wild Bird Window and Building Collisions

Glass buildings kill hundreds of millions of birds annually in North America alone.

Key Facts

Up to 1 billion birds die from building collisions in North America annually
Glass appears transparent or reflects sky, deceiving birds
Migratory birds are especially vulnerable during twice-yearly journeys
Simple deterrents can reduce collisions by over 90%

Welfare Considerations

Birds that survive building strikes often suffer head trauma, broken beaks, internal bleeding, and disorientation. Many die hours or days later from injuries. Even non-lethal strikes cause significant suffering and can impair birds that must continue migration.

What You Can Do

Apply bird-safe window films or decals at home
Advocate for bird-safe building standards in your city
Turn off lights during peak migration nights
Support American Bird Conservancy's Glass Collisions program