Wildlife

Wild Bird Window Strike Prevention

Window strikes kill an estimated one billion birds annually in North America alone, making glass a leading cause of anthropogenic bird mortality.

Key Facts

Up to one billion birds die from window strikes in North America each year
Birds cannot perceive glass as a barrier
Reflected vegetation and sky cause birds to fly full-speed into windows
Commercial buildings and homes both contribute significantly to bird mortality

Welfare Considerations

Window strikes cause traumatic injuries and death to billions of birds annually. Many birds that are stunned recover, but many die from internal injuries hours after a collision. This represents a massive, preventable source of bird suffering that can be significantly reduced with available technologies.

What You Can Do

Apply window collision deterrents such as decals, film, or external screens
Support bird-friendly building design standards in your municipality
Report window strike data to citizen science programs
Advocate for bird-safe glass requirements in new commercial construction