“In Chicago, one Lights Out building showed an 80 percent decrease in strike rates after joining the Lights Out movement,” the organization stated. Since then, dozens of other cities have joined the Lights Out movement to reduce excess lighting and save millions of migrating birds. In 1999, The National Audubon Society, nonprofit organization that protects birds and their habitats, and partners created the first Lights Out program in Chicago. Roughly one billion birds are killed every year as a result of colliding with buildings or crashing into windows. The glow of city lights lure migrating birds into cities and confuse them, causing many to crash into tall buildings or fly aimlessly around the city until they are exhausted and die. Hummingbirds, sparrows, warblers, geese, and millions of other birds migrate thousands of miles across the country every year using the stars as a guide, but city lights make the stars hard to see. 80 percent of migrating birds travel at night, but many never make it to their destination due to a man-made problem – light pollution. As temperatures begin to fall and the days become shorter, birds are heading south for the winter.
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