The risk that wind turbines pose to birds is already very small. Wind farms kill 440 thousand birds per year. Meanwhile, building windows kill about 500 million, and cats another 500 million. A standard wind turbine kills 4.27 birds per year, so of course you shouldn't build a massive wind farm in an area with endangered birds.

Outside of that case, what if the whole US was powered by wind energy? That would mean 315333 wind turbines, causing 1.34 million bird deaths per year. That's still negligible compared to cats, windows, hunting or communication towers.

sources:

https://en.wikipedia.org/wiki/Environmental_impact_of_wind_p...

The US uses 473 GW on average, A standard wind turbine produces 1.5MW. 473000/1.5 = 315333. https://en.wikipedia.org/wiki/Energy_in_the_United_States#Co...

Modern wind turbines already are safer for bird life. The windmills that killed raptors were the small fast-moving ones, which are being replaced by more efficient, and gigantic, slow moving ones.

We should try to make wind turbines safe for birds because it's the right thing to do, but we should focus our energy elsewhere if preserving bird life is a goal: https://www.motherjones.com/politics/2013/01/chart-cats-vs-t...