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SENSITIVE SPECIES: MAMMALS Pine Marten (Martes americana) Marten prefer late successional stands of mesic, conifer-dominated forest, preferably spruce-fir, but also occupy ]odgepole pine, Douglas- fir and occasionally cottonwood riparian areas. This species is considered a conifer old growth obligate. Marten feed on small mammals, especially red-backed voles, red squirrels, some birds, insects, fruits, and berries. Dens aze key habitat components. Dens maybe at considerable height from the ground in a hollow tree (often an abandoned woodpecker hole) lined with grass, leaves, and mosses. They may also be on, or under, the ground. Dens on the ground are usually associated with rock piles or hollow logs; therefore, snags, woody forest floor debris, brush, rock slides, and/or rock outcrops aze important habitat components for this species..) Wolverine (Gulo Qulo luscus) Wolverine inhabit high mountain forests of dense conifer, and further north, tundra. The wolverine is very solitary. Wolverine prey upon a variety of mammals, as well as scavenge for carrion and supplement their diet with roots and berries. Remote azeas of sufficient size to support wide-ranging individuals aze important for the maintenance of viable wolverine populations. They follow their prey to lower winter elevations, and their lazge home range and diversity in diet allow them to avoid conflicts with humans. Wolverines are believed to eat mostly carrion, and are opportunistic hunters. Greatest threats to wolverine populations are intrusions and development into their habitat. Increased recreational use of habitat could have a negative impact on populations. Wolverines are very sensitive to human disturbance. Riparian areas maybe important especially in winter. Big game winter ranges aze important sources of weakened animals or carrion. Ringtail Cat (Bassariscus astutus) . Ringtails inhabit arid and semi-arid habitats throughout the Southwest. Associated with rocky canyon country and foothills azeas of pinon juniper woodlands, montane shrublands, or mixed conifer-oakbrush. Ringtails aze omnivorous and their diet vanes with food availability. Feeds on various small mammals including deer mice, ground squirrels, woodrats, lagomorphs, and bats. Mammals, fruits, and arthropods compose over 80% of diet. Mostly nocturnal and shy, and seldom observed even in areas where they are relatively common. Dens in rock crevices, under lazge boulders, in hollow logs and trees, or in old buildings. Pygmy Shrew (Microsorex hoyi montanus). Moist meadows, damp spruce/fir and lodgepole forests, forest meadow transition areas, sphagnum bogs. Lives under logs and roots of tree stumps.