Resting after a hard day surveying
Aerial view of Mount Williamson from the north
Mt. Williamson is one of the original native Sierra bighorn herds, but has remained small in numbers since it was first studied. In approximately 30 years of study, this herd appeared to hold steady at under 20 animals total in population. However, in 2021 several lucky observations of this elusive herd brought the population total up to 41 animals.
The Recovery Program began collaring animals at Mt. Williamson in 2008. In 2009, at least 1 bighorn ewe travelled here from Mount Baxter and took up residence in the George Creek area. Other ewes have traveled between these herd units, but it is not clear if they immigrated or were just visiting.