The Bubbs Creek herd unit was naturally re-colonized by Sierra bighorn in the late 1990s to early 2000s. The Recovery Program began collaring animals from Bubbs Creek in 2009. In 2021 we estimated there were approximately 28 bighorn there. This herd unit is relatively difficult to access and small in population size, which makes it challenging to monitor.
Many of our important observations from this herd have come from hikers who send photographs of bighorn sheep. We routinely see rams moving between Sawmill Canyon, Mount Baxter, and Bubbs Creek ensuring good gene flow.