Birds often collide with windows because they see reflections of trees, sky, or open spaces and mistake them for safe passage. These collisions can cause serious injury or death, especially for migratory birds. Birds do this because they don’t see glass as glass, or any sort or barrier. They think the the window is part of the sky and landscape, or occasionally they’ll attack a window when they see their own reflection in it (this is more common during mating season).…








