Bird strikes are one of the main environmental concerns surrounding onshore wind farms. Dr. May, a senior researcher from the Norwegian Institute for Nature Research in Trondheim, said they were keen to test whether mitigation measures could reduce the rate of bird strikes. In a study, they found out that painting one blade of a wind turbine black could cut bird strikes at wind farms by up to 70%. The idea is that this design reduces the so-called motion smear, making the blades more visible to birds reducing the annual fatality rate significantly.
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