Some numbers from 2013 ...
May 14, 2013
Wind energy is frequently touted as a clean, green source of energy that can reduce our dependence on fossil fuels.
But like all sources of energy, wind power comes at a cost — one that's too often borne by eagles, hawks, falcons, owls and other birds.Wind turbines kill more than 573,000 birds each year in the United States, according to The Associated Press, including federally protected species like bald eagles and golden eagles. Even bats are falling victim to wind-turbine blades: The Pennsylvania Game Commission estimates that more than 10,000 bats are killed in the state each year by wind turbines, the Wall Street Journal reports. ...
Wind-farm siting is another factor. Many wind farms, like the Altamont Pass Wind Farm in northern California, were constructed in the middle of important migratory routes and are surrounded by prime raptor habitat.Altamont Pass has come under fire for being one of the deadliest wind farms in the world. One study found almost 10,000 birds die each year beneath the wind-turbine blades at Altamont, and most of them are federally protected raptors or are protected by the Migratory Bird Treaty Act, the Journal reports. ...
https://www.livescience.com/31995-how-do-wind-turbines-kill-birds.html
