The ones on the website I was reading http://www.dasolar.com/home-wind-power/tennessee/memphis says the SMALL ones are 250 feet tall. Birds don't normally fly that high. And the turbine arms don't move so fast that a bird would not see them.
There is a company here that installs home or buisness windmills and the energy providers offer rebate incentives and tax breaks for you to get one and hook up the power grid or to your home. It just has not caught on very well yet. As often as this city loses power due to winds, you'd think that the gas generator craze would give over to windmills.
We are slam in the middle of tornado alley and when we get a big blow or an ice storm, trees and limbs fall on power lines. Our power grid is still mostly above ground. I hadn't really thought about birds. We are in the Mallard flyway and duck are iconic symbols of Memphis, so that could be an issue.
Windy here too --- and the nearby city of Bowling Green has four windmills. Why not more? People don't want them in their field or neighborhoods --- claim they are noisy! LOL Also, each windmill requires so much study about birds hitting them, etc. Our four seem to be bird-death-free but others have bad records...
Here's another view of Buddha house
Here's the weird solar house.