The home range of a Red Tree Vole may consist of just one tree, usually a large old Douglas-fir, where the vole builds its nest, eats the needles, and gets water by licking dew drops from the needles. Nests have been found more than 50 m (150 feet) above the ground. Except for females with young, the Voles nest alone, although several may nest in the same tree, and Voles may re-use empty nests. They are tiny, weighing only an ounce or so and measuring about 4 inches from nose to rump. Their fur is thick, soft, and long, brownish-red in Voles from the Oregon coast, and lighter brown to orangish-red in the Cascades subspecies. The northern spotted owl is their main predator.

Links:
Mammal Species of the World
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