A commenter on another post introduced me to the term barotrauma. His concise explanation:
There is also something called barrotrauma, that is pulmonary embolism caused by a bat or bird flying behind the spinning blades. No contact is necessary and bats and sometimes birds can fly for quite a distance before hemorrhaging to death.
If you’ve been reading my blog for a while, you know I’m not concise. So here is my longer explanation.
My correspondent refers to this summary. You can find the full article on the second tab of that link. I don’t see a specific data, but do notice a 2008 copyright date.
I also found the article here: Barotrauma is a significant cause of bat fatalities at wind turbines.
The team of biologists explain wind turbines create a low-pressure area behind the turbine. Bats have superb echo locating ability so they can easily identify turbines and stay out of their way. The low-pressure area is undetectable for them.





