The Western Red-backed Vole lives in conifer forests from the Columbia River south through western Oregon to northern California. Its population densities are greatest in dense, dark forests where there is little or no understory. These Voles prefer old-growth to young forest, and upland to riparian areas. They use decaying logs for foraging, nesting, and inner-log travel routes, and they make other pathways along large, hard logs. In Oregon, these voles consume largely fungi and lichens, with some conifer seeds and insect larvae. They may play a role in disseminating fungal spores and bacteria that are important to the ecology of the forest.
Links:Mammal Species of the WorldClick here for The American Society of Mammalogists species account
Original description: Merriam, C.H., 1890. Descriptions of twenty-six new species of North American mammals, p. 26. North American Fauna, 4:1-60.