Clethrionomys californicus records in California fit moist forest, brush, and meadow along the Pacific side of the state.
Reports center on the redwood belt and Coast Ranges, with some records extending into the Sierra Nevada. They show where people have documented the species, and they don’t rank California’s best habitat.
Reports rise most clearly in Jun–Jul, Sep. That pattern can reflect animal movements, weather, and observer effort, so it isn’t a population count.
Full species profile
