In the EU windmills are stopped by law when birds sing.

The owner of this windfarm near Rotterdam complaints. The windmills have microphones that detect sound. When the birds sing, the mills stops. Cost is 15.000 a day. Enjoy the article.

https://nos.nl/artikel/2321832-molens-in-zeeland-staan-stil-voor-vogels-en-dat-kost-15-000-euro-per-maand