Millions of birds injure themselves by striking sliding glass doors and windows each year.
Bird Feeder Window Warnings prevent it.
Glass, especially when it is clean, reflects its surroundings like a mirror. This creates a treacherous illusion for birds to fly into. These screens or stickers attach to the window and help the bird see that a barrier is present. If you are working to attract birds to your yard, a bird window warning on sliding glass doors and some windows is an important edition to your home.