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Old 11-10-2011, 11:38 AM   #1
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bat The mysterious link between bats and wind turbines

The mysterious link between bats and wind turbines
Credit: Posted by: Josephine Marcotty, True North, startribune.com
2 November 2011
filed: November 3, 2011 • U.S., Wisconsin

Wind Watch: The mysterious link between bats and wind turbines
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For years researchers have been puzzled by the number of bats killed by wind turbines. Birds, yes. But bats, in theory, should be able to avoid the towers because of their innate sonar systems that orient them in space. Nonetheless, they die in the thousands, in far greater numbers than birds. Some research found that they died because the enormous changes in pressure as the blades sweep through the air ruptured their delicate ear drums, causing a hemorrhage known as barotrauma. Now, a new study based on bat autopsies from the University of Wisconsin found that the problem is far more complicated…
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