You can do your part to make the skies friendly for migrating birds by deterring window collisions and minimizing light pollution at your home. Lights Out Chicago, for example, has saved 10,000 birds annually. Toronto, New York, San Francisco, and other cities have started lights-out programs aimed at persuading building owners to turn off lights from dusk to dawn during migration season. Confused and exhausted, they often collide with buildings, homes, or each other.īut it doesn’t have to be that way. Once in a beam of light, they may be reluctant to fly back out, or become disoriented and pulled off course. The glow draws birds in, and they can become trapped. Our brightly illuminated cities and neighborhoods interfere with this behavior by letting artificial light leak into the atmosphere. Many birds migrate then, using natural light from the moon, stars, and setting sun as navigational tools. 2. The window is transparent, and birds see through it to appealing objects on the other side.Įven if the impact doesn’t kill a bird immediately, it may be injured or stunned, making it vulnerable to predation later. Daytime bird collisions typically occur for one of two reasons: 1. The window is reflecting the surrounding habitat, and birds can’t tell the difference.
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