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Wind Turbines Kill a Few Birds
Guppy06 writes "The Houston Chronicle has an article about how a 7000-turbine windfarm in Altamont Pass, California (the world's largest collection) has killed an estimated 22,000 birds during the past 20 years or so of operation, 'including hundreds of golden eagles, red-tailed hawks, kestrels and other raptors(.)' There are efforts to keep the operators from renewing their permit until they take measures to protect bird populations. To put things in perspective the article goes on to point out that the Exxon Valdez spill is estimated to have killed around 250,000, while the whole story can just about be summed up by one quote by a biologist: 'When you turn on your lights you kill something, no matter what the source of electricity.'" Killing 3-4 birds per day doesn't seem too bad. It's a shame that larger, rarer birds are getting killed, but... How many birds would die from the acid rain that a coal power plant would cause?
I remember seeing something about it's location being in a migratory flight path and other wind projects did not have the same problem.
TastesLikeHerringFlavoredChicken
The Altamont story about wind farms killing birds is old news. While true, the story is misleading because the vast majority of wind farms are in very different settings with a much lower thread toi birds. A much more reasoned analysis can be found here: http://www.ibiblio.org/pardo/birds/archive/archive 2/msg00468.html
"Researched by Wyoming-based Western EcoSystems Technology, the report contends that many more birds are killed annually in collisions with vehicles (60 million), window panes (98 million) and communication towers (4 million) than die nationwide in wind turbines (10,000 to 40,000).
Even the common household cat, wind power industry advocates argue, is responsible for more bird deaths than turbines"
heh, a little persective, there.
The Kruger Dunning explains most post on
There isn't a whole lot, but here's some extra information (refs available on request):
Osborn et al. 2000
Minnesota, estimate 36 +/- 12 birds per year, less than one per turbine
Osborn et al. 1998 (same site):
Observed flight patterns, found that most bird flew above or below the turbine level
Johnson et al. 2002 (same site):
"We assessed effects of the wind farm on birds from 1996 to 1999, with 55 documented collision fatalities. Recovered carcasses included 42 passerines, 5 waterbirds, 3 ducks, 3 upland game birds, 1 raptor, and 1 shorebird."
De Lucas et al. 2004:
Straits of Gibralter, most birds altered flight path to avoid turbines
Several of these researchers seem to think that turbines do kill birds, but in very small numbers compared to other structural sources of mortality. (birds hit stuff, especially plate glass windows)
The problem is that it's easy to count dead birds at the base of turbines, but hard to count birds that died from most other sources of power...
I prefer to be called Evil Scientist.
I think this may be a legend. I Germany there was research about bird populations and wind farms. In the 80th it was suspected that it had effects on bird death, that rotors may kill birds. However this assumption was falsified by empirical evidence.
Acid rain is a myth that has been debunked for years.
By who, the Iraqi Information Minister? I used to live in the house my father grew up in, which is downwind from a paper mill. When he was growing up, the rain would literally peel away the paint on my grandparents' house and car over a few months, and the grass and trees were always sickly. In the wake of clean air legislation, I've never had to see acid rain, and my yard was always green. I don't even smell the stink that used to occasionally come from the plant when I was a kid anymore.
If it's for-profit but free, you're not the customer -- you're the product (e.g., the Slashdot Beta's "audience").
Exactly, and there are 7000 turbines, so that makes little over 3 birds killed per turbine in 20 years, or 0.157... birds/year/turbine! Compare this to other mechanical devices killing animals, like cars running over hedgehogs, boats knocking fish on the head, animals killed after Chernobyl, or insects on your wind-shield and I'm impressed, 22000 is pretty low.
As a quick comparison, in the past year, three birds have died after running into the living-room window in my house. Those turbines are downright safe!
"They redundantly repeated themselves over and over again incessantly without end ad infinitum" -- ibid.
Scientists restrict study to entire physical universe; creationist
The bird kill in California is often used as a anti-wind argument. (Texans still think of themselves as an oil producing state, despite having a net import of oil for about 10 years now)
In this case it is a flaw in the design of the farm... in Alton pass the turbines sit on gridded towers (like high tension lines). These towers make excellent perches, and a lot of birds hang out in them. Hawks especially have a tendency to dive at prey, and run smack into a turbine blade.(They don't get chopped up, just collide like your living room window.)
Most newer wind farms have far less turbines (its cheaper days to install a single 1MW turbine, than 10 100KW turbines. Also the industry has learned that monopole tower (a single smooth shaft, rather than a lattice) keeps the birds away. (Its cheaper to install too..)
This comment created using 100% renewable electrons via AustinEnergy GreenChoice (mostly wind)
The poor management of one company does not mean nuclear power is expensive. You are correct in that regulation and security add a great deal of cost, but incorrect that this is a deal breaker.
I work at a nuclear power plant, and we sell electricity in a de-regulated market. We underbid all the other types of plants in the New Hampshire Market, and still make hundreds of millions of dollars a year in profit.
We buy our fuel from Westinghouse, and they seem to find it to be a profitable business, because they're still in it. They charge us $750,000 per fuel assembly (193 at a time), and if you read my other post, you'll understand why we pay gladly.
Decomissioning a plant is expensive, true, but represents the profit of one years operation, out of a 40-60 year run for most US plants. The threat of terrorism has undoubtable cost a lot of money in additional security, but since incredibly tight security was the rule long before 9/11, I doubt the increase was even 25% of the security budget. No facts on that, just an educated guess. You'd have to have a team of Navy Seals to get into our plant unnoticed, and even if you did, the worst you could do would be to irreprably damage the plant- not harm the public.
Alcohol, Tobacco and Firearms should be the name of a store, not a government agency.
If spider webs clogged up the screening then I'd say your turbines weren't getting too much wind in the first place.
Have you ever driven through this particular wind farm, or one much like it?
For one thing, as much wind as these things get, they don't get wind ALL the time. Some spiders are pretty darn fast. (We used to end up with webs across the path to our back gate all the time, even though we walked through there every day.)
For another thing, some of the turbines are usually turned off. I'm not sure why, but you'll look out and see a patch that are busily whirring away, and another patch right next to them still as stone. Maybe maintenance, efficiency, or bird preservation... but it happens.
Don't you wish your girlfriend was a geek like me?
Yeah, I (the original guy who made that comment, but posting as an AC to avoid burning karma) kinda agree with you -- some farms are nice - a farm in Santa Cruz where you can see the birds wander around (wings not clipped, hanging around for the food) -- others, even free range ones, suck, and they clip the wings and let the birds roam "free" just for the marketing gimmic.
What's so bad about clipping their flight feathers? It does not hurt the chickens and actually prevents them hurting themselves. I have raised chickens and, well, they just don't fly all that well. They are likely to get hurt trying to fly over fences and such. So clipping their flight feathers is actually humane.
I don't like the idea that factory farm chickens get their beaks clipped. It probably does hurt the chickens. BUt the rationale is that clipping their beaks prevents them from pecking each other to death, which they certainly will do if allowed to do so. They are especially bad about pecking wounded chickens, so it is one of those things that escalates.
Personally I prefer the free-range method, but even if we allow factory farms there are some very basic modifications that could be made to make them more humane. I don't like to think that the drumstuck I am eating was once permanently fused to the bottom of a cage at the foot because the foot, mired in the feces of the chicken it was attached to and hundred s of chickens above it, naturally had the wires of the cage gradually cut into it over time and then tried to heal back but for lack of room included the wire in the foot. I don't like to think about all those wounded chickens that have to be fed overdoses of antibiotics to keep said feet from just rotting off. I also don't like to think about the tons of chickenshit allowed into our drinking water.
But all of that boils down to simple neglect and the factory farms not giving a shit, literally. If a few basic laws were passed, the farms would be able to continue to operate with minor modifications and the chickens would have a better life. They would still be bred in a cage for slaughter, but it would be a nicer cage.
I don't know if you can breed as many chickens in a free range farm. If you can then they should switch to that method as it is better all around. But in closing, clipping their wings is not so horrible as the normal lot of chickens.