Wind farms kill birds.
"...her results suggest that on average one or two birds are killed by each turbine each year..."
Compared to roadkill, feral cats and foxes, this has to be considered a reasonable and acceptable cost.
https://www.theguardian.com/environment/2019/aug/04/do-windfarms-kill-birds-how-australia-can-limit-the-impact-on-threatened-species
Ash