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There many advantages of wind turbines and wind farms. They important in providing green energy. However, there are also some disadvantages. One of these that the giant blades on turbines thousands of birds. Many birds accidentally into the blades and die. Researchers have a solution. They say painting one blade black could birds see the rotating blades. This could bird strikes by up to 70 per cent. Researcher Dr Roel May said: "The collision of birds...is one of the main environmental concerns to wind energy development." The findings of the research have been in the conservation journal "Ecology and Evolution".

Dr May and his team research on how to the death rate of birds due to wind-turbine blades. They one blade of four different turbines black. The data that over four years, the turbines with one black blade saw a reduction in bird deaths of over 71 per cent. Dr May said: "Few effective measures have been to reduce the risk of collision." The RSPB, a bird protection group, the idea. It the importance of wind farms to "take place in harmony with nature". It added: "Wind turbines are the right technology when we the right places for them." It said wind farms should be in places where there is little risk to wildlife.