Pack Status: Active. Designated in Fall 2025.
Formerly the ‘Southern Plumas County Area of Wolf Activity’ and the ‘Southwestern Plumas County Area of Wolf Activity’, the Grizzly Pack was declared a pack at the end of the third quarter of 2025.
Originally thought to be two independent groups, monitoring and survey data from the summer of 2025 suggest a single pack occupying this area. In January 2025, at least two additional wolves were detected in the historical Beyem Seyo pack area to the north. At the same time,
camera detections by the Plumas National Forest and U.C. Berkeley confirmed two wolves to the west, east of Quincy.
In June 2025, DIS05M (a previously unrecorded male from Oregon) and LAS37F (a female from the Lassen Pack) were confirmed in this area through genetic analysis. Confirmed livestock depredations from wolves in Spring 2025 have been linked to LAS37F.
In late summer 2025, a pup was observed on a remote camera in this area, suggesting the pair (DIS05M and LAS37F) reproduced.
