Domestic cats kill 55 million birds every year in the UK. Why are you so concerned about the few thousand killed by wind turbines?
It's thousands now, but it will be millions when the wind turbines increase, so something has to be done to mitigate it. Maybe some sort of audio to warn the birds, or flashing lights. In the same way, cats should have collars with bells to help protect wildlife.
So you really are concerned about the birds? There was me thinking you were just spreading oil lobby propaganda.