Ecology and Evolution: Paint it black - Efficacy of increased wind turbine rotor blade visibility to reduce avian fatalities

We tested the hypothesis that painting (one blade) would increase the visibility of the blades, and that this would reduce fatality rates in situ, at the Smøla wind-power plant in Norway, using a Before–After–Control–Impact approach employing fatality searches. The annual fatality rate was significantly reduced at the turbines with a painted blade by over 70%, relative to the neighboring control (i.e., unpainted) turbines.