Fatalities due to wind turbines are significant, but mostly for birds and bats. The U.S. Fish and Wildlife Service estimates that between 140,000 and 500,000 bird deaths occur at wind farms each year. However, scientists in Norway recently presented a nine-year study where they painted wind turbines a highly visible black and observed a 70 percent drop in bird deaths. These findings may help reduce the impact of wind turbines on migratory animals in the United States.