bird collision hazard: trees seen through windows. animalia project.

birds and buildings

Have you ever heard a bird hit a window?  Or seen it?

The reflected image tree hazard for birds bird collision hazard glass window reflection animalia project susan ask
The reflected image of a tree creates a hazard for birds. (photo by susan ask)

Most people have.  When you add up all those experiences, it’s evident that bird collisions with glass pose a significant hazard to birds.  The problem is worse when birds migrate through cities and towns every spring and fall—thousands of birds can be killed each year at a single, large building.  Even a single apartment or house can be a problem– research in Illinois found that windows on houses were struck by 1 to 4 birds each year.

Sometimes we see it; sometimes we don’t.  Across North America, hundreds of millions of birds die from collisions every year.

Many species are affected from hummingbirds to hawks, including endangered species.

Learn more about bird collisions and solutions: