From Newsgroup: rec.birds

https://www.bbc.com/news/science-environment-53909825#:~:text=%22Collision%20of%20birds%2C%20especially%20raptors,has%20caused%20opposition%20and%20conflict.%22


Painting one blade of a wind turbine black could cut bird strikes at
wind farms by up to 70%, a study suggests.
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