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Researchers looked at how to reduce the
of birds dying in wind-turbine blades. They painted one
of four different turbines
. Over four years, the turbines with one black blade saw a
reduction in bird deaths. A researcher said: "Few
measures have been developed to reduce the
of collision." A bird protection group welcomed the
. It said wind farms needed to be "in
with nature". It added: "Wind turbines are the right
when we find the right places for them." It said wind farms should cause little risk to
.
