Analysis of information sources in references of the Wikipedia article "Reproduction and life cycle of the golden eagle" in English language version.
Annual nest surveys have revealed a substantial breeding population, the density of which is among the highest reported for the species. An 820–km2 area near the town of Livermore held at least 44 pairs in 1997, a density of one pair per 19 km2
The area surrounding the Altamont Pass Wind Resource Area (WRA) near Livermore, California contains a higher reported density of nesting golden eagles than anywhere else in the world.