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Posted on 11-17-2017
Wind Turbines Kill Winged Creatures
Wind turbines make for clean energy, but are dangerous to birds and bats. According to a study in the Wildlife Society Bulletin, approximately 573,000 birds and 888,000 bats are killed annually by wind turbines, due mainly to increasing wind power capacity across the nation. At one solar power plant in California, an estimated 3,500 birds died in just the plant’s first year of operation.
What would help most is offshore turbines and knowledge about migration routes. The safest place for wind turbines is in the ocean, because songbirds and bats don’t migrate over such waters. On land, many songbirds fly at night and can’t see the wind turbines until it’s too late. Once they’ve discovered the unsafe area, they avoid it. Because migration routes are based on availability of food, water and resting areas, birds are forced to fly around the turbines, adding miles to their trip and the burning of more calories.
Estimates of just how many bats are dying each year range from the tens of thousands to hundreds of thousands. Radar installations help to keep bats away from the deadly blades. Other remedies include slowing the blades at night to reduce collisions, which has proved to reduce overall wildlife deaths by 73 percent.
In 2016 the American Wind Energy Association announced voluntary guidelines to halt turbines during low wind speeds, when bats are most active, to reduce bat fatalities by 30 percent. If the industry will make two additional changes, bat fatalities could drop 90 percent: feathering, or turning the blades parallel to the wind so the turbines don’t rotate; and higher cut-in speeds, between 5 to 6.5 meters per second.
Take action at NationOfChange.org/petitions/protect-bats-lethal-wind-turbines.
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