Its the main problem with wind farms, to be effective they have to well spaced or the wind flow is hampered. everyone likes the idea of wind farms, but just near them, and not in areas of natural beauty. I can see the Scots putting up some wind farms on a few uninhabited islands, the problem then is that the windmills kill a lot of birds, off shore windmills have the same problem
The RSPB objects to any planning applications that are a threat to bird populations but generally supports them. They say wind farms should be located away from major migration routes and important feeding, breeding and roosting areas of birds. They can also kill bats I believe. Uninhabited Scottish islands may be breeding grounds for sea birds so that may stop that.
Like most things you have to think about where you are putting them and what damage they may or may not do.