The death count, averaging 67 a year for three decades, worries field biologists because the turbines, which have been providing thousands of homes with emissions-free electricity since the 1980s, lie within a region of rolling grasslands and riparian canyons containing one of the highest densities of nesting golden eagles in the United States.
“It would take 167 pairs of local nesting golden eagles to produce enough young to compensate for their mortality rate related to wind energy production,” said field biologist Doug Bell, manager of East Bay Regional Park District’s wildlife program. “We only have 60 pairs.”
I work within sight of hundreds if not thousands of those ugly-ass windmills, but I gotta truthfully say I have never seen a Golden Eagle in that area before or after they were erected. Not doubting the reports, just saying I haven't seen any.
Oh well. The expression that comes to mind on this one is "If ya wanna play, ya gotta pay".