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...