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No. of Recommendations: 2
Black turbine blade 'can cut bird deaths'
www.bbc.com/news/science-environment-53909825
Birds colliding with the structures has long been considered to be one of the main negative impacts of onshore wind farms, the authors observed...."Collision of birds, especially raptors, is one of the main environmental concerns related to wind energy development," observed co-author Roel May. "In Norway, 6-9 white-tailed eagles are killed annually within the Smøla wind-power plant; This has caused opposition and conflict."....

"One of the mitigation measures we tested was painting one of three rotor blades black," he told BBC News. "The expectation is that this design reduces so-called motion smear, making the blades more visible to birds....The annual fatality rate was significantly reduced at the turbines with a painted blade by over 70%, relative to the neighbouring control (i.e. unpainted) turbines."

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