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Montana Range
Observations in Montana: 303
Montana CountiesBeaverhead, Big Horn, Blaine, Carbon, Carter, Chouteau, Custer, Dawson, Deer Lodge, Fallon, Fergus, Flathead, Gallatin, Garfield, Glacier, Golden Valley, Hill, Jefferson, Lewis and Clark, Madison, Meagher, Musselshell, Park, Phillips, Powder River, Prairie, Ravalli, Richland, Roosevelt, Rosebud, Stillwater, Sweet Grass, Yellowstone
Non-migratory.
Only chipmunk found regularly in sagebrush area of E. and SW MT. Also found in brushy grasslands, coniferous forests, alpine tundra, and timberline krummholz. Habitat preference influenced by sympatric chipmunk species (Hoffmann and Pattie 1968).
Seeds and berries. Uses berry pits, seeds of grasses, sedges, and weeds. Stores food. Also uses invertebrates.
T. minimus ordinarily inhabits lower elev, drier habitats than T. amoenus or T. ruficaudus. However, in Glacier N.P. area, T. minimus occupies the alpine and T. ruficaudus and T. amoenus occur at lower elevations.
Breeds soon after emergence. Young are independent within 2 months. (Jones et al. 1983).