Unfortunately good intentions can sometimes have bad side effects. That has been the case with wind energy. A study by the Us Fish and Wildlife Service reports that at least 85 golden and bald eagles were killed at wind farms between 1997 and 2012. That may not sound like a huge number over 5 years, however the study relied mainly on volunteered reports of fatalities by the wind energy companies. So it is possible the number may be much higher. The study also did not include all US wind farms. The Altamont Pass Wind Resource Area in California was not included in the study. It is located in an area with a high population of golden eagles and may be responsible for as many deaths as reported in the study every year.