The Golden Gate Audubon blog had a very positive report on decreased deaths from Wind Turbines at Altamont Pass. It is estimated that there is a 50 percent decrease in the deaths of four raptor species.
The estimated number of Golden Eagles killed by turbines each year fell from 58 to 33, Burrowing Owls from 543 to 233, American Kestrels from 415 to 268, and Red-tailed Hawks from 196 to 85, according to a report accepted last month by the Scientific Review Committee of the Alameda County Altamont Pass Wind Resource Area (APWRA).
These positive results are mainly due to the advocacy and activisim of local Audubon chapters and members. Read more at: Good news for birds at the Altamont wind farm | Golden Gate Audubon Society.