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Sierra Nevada Bighorn Sheep In Sequoia Kings Canyon - Mount Williamson

Mount Williamson herd movement data


Recent Events

  • 02/12/2019 A collared ram was seen with two other rams by staff in winter range close to the valley floor.
  • 06/03/2018 8 sheep were seen on the North side of  George Creek. A common place to find sheep in the summer.
  • 11/30/2017 A yearling ram from the Mt. Baxter herd unit, moved between upper Hogback Creek and George Creek which is part of the Williamson herd. He changed herds which is not common!
  • 09/30/2016 10 Sierra bighorn were spotted at the mouth of George Creek, a common place for Sierra bighorn to be during the winter.

Resting after a hard day surveying
Resting after a hard day surveying

Aerial view of Mount Williamson from the north.
Aerial view of Mount Williamson from the north.


The Mount Williamson herd 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 has held steady at under 20 animals total in population. The SNBSRP began collaring animals in this herd in 2008. In the spring of 2017 we had a total of four animals collared there. This is an area where we've documented immigration from another herd. 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.

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