The problem with wind turbines and bird and bat collisions does have a solution - though it can be costly, though certainly viable for wind park companies. Here in southwest Portugal, near Sagres a Portuguese company (Strix) has been working over a decade on fine-tuning methods to avoid collisions. The result is, that through many 1,000s of hours of observation and experimenting with radar as an assistance, bird collisons have been avoided completely. They are a great team and I have had the pleasure of working with them over the years on site helping with 100s of days of raptor migration monitoring, power line surveys (from the windpark) and looking for casualties below the turbines. Their success has been notable and the system they have in place is raising interest among others working in the environmental part of the wind energy industry. I don't like wind turbines at all - awful things on many levels. Anyway, as they exist, better that some folk are working very hard to find solutions to bird deaths etc.
Strix is now working on wind park monitoring for birdlife in Egypt, Tunisia, Djibouti and other countries.
https://www.strix.pt/index.php/en/birdtrack