The ex President’s penchant for hyperbole aside; it is a problem…
It is unfortunate then that wind energy has its own dark side: thousands of birds and bats are killed annually by wind turbines. Causes of death include collision and barotrauma—internal injuries caused by exposure to rapid pressure changes near the trailing edges of moving blades
However it’s a matter of degrees…
If we’re looking at the bigger picture, wind power’s impact on bird populations is relatively small when compared with other human-related sources of avian mortality. Numerous studies demonstrate that far more bird deaths are caused by collisions with buildings (676 million), vehicles (214 million), and power lines (32 million) in the United States. (It should be taken into consideration, though, that birds killed by wind turbines have historically been of higher conservation value than the robins and sparrows killed by non-wind-related sources.)
Cats actually top the list when it comes to annual bird deaths in the United States.
And, still, the wind industry is taking it very seriously