What I learned about the birds and the bats
by
wrylee
06/14/2008, 1:02 PM #
I think it is very enlightened that you would add bats to the concern for your feathered friends. Looking around I came upon the NRC (Nat'l Research Council, not the nuke guys) report (PDF) on wind from last year. While I have not had the time to go through it all, I'm grateful for the impetus. I'm a bit embarrassed I had to look up Rails and Coots - could be a Country Western band, no?
The article that led me to the report indicated that fewer birds are killed by wind turbines then by household cats, and that most of the deaths occur with the most common type of birds. Either that or those birds just don't taste good and the scavengers don't haul them away from the site as fast as the the less populous species.
Interesting that they are out there counting dead birds and bats and the report points out that one of the problems is that they may undercount the bats because they may have been removed by other animals or that they might miss them. I think we often forget how small those flying mammals are. I know they seem to be a couple feet across when they come by after sunset. But then the annual first buzz of the season by a hummingbird scares the crap out of me for a second until I remember that where I live there are no bugs that big.
I do find it encouraging that they believe that the bats are actually attracted to the turbines because that means that there is something we can do to make the machines less enticing. It is also encouraging that we are looking at this to minimize our impact as we build out.
I would be willing to bet that on a /MW measurement, wind still has a fairly low overall impact. But at this point the bet would be rather small.
Thanks again for prodding my curiosity - that is one of the things I like about reading here.