The red tree vole (Arborimus longicaudus) is an arboreal mouse-sized rodent found in western Oregon south to northwestern California, with the north Oregon coast distinct population segment (DPS) of red tree vole occurring in the northwest quarter of the species’ range. Tree voles are small rodents less than 8 inches long and weighing less than 2 ounces. Their thick coats range in color from reddish-brown to orange red. Tree voles live and nest in the canopy of conifer forests and rarely come to the ground. They feed primarily on Douglas fir (Pseudotsuga menziesii) needles, or in one narrow region along the Pacific Coast alternatively on Sitka spruce (Picea sitchensis) and western hemlock (Tsuga heterophylla) needles.