windTurb_Birds
Bird collisions with wind turbines not a serious problem

Many people are likely to believe, as I did until recently, that Wind energy is a great idea but too bad it is so terrible for the thousands or millions of birds who fly into the blades and get sliced up like a Cuisinart blender. One of those things you read somewhere and then never question. Apparently, except for a few situations most wind turbines are considered relatively safe for birds and bats. Far more birds die from your cat in the back yard, or from collisions with windows, cars, lighted communication towers, and pesticides to name a few.

Here are some good links for anyone wanting to get a more in depth discussion of this issue.
An article in Treehugger
A very comprehensive look at birds and wind energy from bird consultants to the wind power industry.
and advice from an expert, putting wind’s impact on birds in perspective.