Nests apparently are for 1 individual, and have only 1 entrance, on the side. Young are born in these grass nests. No data found, but probably requires, or prefers, free water. Dense, herbaceous growth in moist areas beneath, or near, coniferous forest is preferred habitat. No data found.
Sexual maturity is achieved in the spring following birth.
Its distribution seems to be confined to the fog-drip zone in California. Predators include foxes, coyotes, house cats, hawks, owls, snakes, and fish. The mammals and life zones of Oregon. Agric., North Am. Fauna No. 55.