Study that a bit more. More eagles drop dead of heart attacks than die from windmills. They are used to dodging moving objects. Windmills don't make a ton of noise, either. The industrial sized ones are fairly dangerously tall, though. And the people building them are whining about how they can't get anyone to risk their life climbing and servicing them for only $20/hr. That's about $0.10/ft of height above ground. Back when I used to climb, the going rate was $1.00/ft, because of the danger.