The Columbian black-tailed deer is a typical member of the deer family, about the size of its eastern relative, the white-tailed deer. The antlers of the males are forked, rather than having the tines rise from a single main beam as do those of the white-tail. The upper surface of the tail is conspicuously dark brown or black over its entire length. The color of the pelage varies with the season, but is the same in both sexes. In summer the back and flanks are reddish to reddish yellow; in winter gray, intermixed with black, with a dark line along the back, black on the top of the head, and conspicuous white on the chin and upper throat. The underparts are sooty, with white on the inner sides of the legs. The young, at birth, are a dark, rich brown, profusely spotted with creamy yellow. The dark coloration very shortly fades to a lighter brown, or reddish, similar to the summer coat of the adult, and the spots disappear in the early fall when the change to winter pelage begins. _Specimens in park collection:_ RNP-14 and RNP-113; Longmire Museum, Park Headquarters. The range of the Columbian black-tailed deer is the Pacific Northwest from northern California to British Columbia and from the Sierra Nevada and Cascade Mountains to the Pacific Coast. [Illustration: The bleak and awe-inspiring grandeur of the Arctic-alpine life zone is the summer habitat of the mountain goat.] It is the most common large animal in the park, distributed in summer throughout the forested areas and occasionally wandering above tree line, the males generally ranging higher than the females and young, preferring the sub-alpine parks and meadows. Deer in general exhibit a preference for burned-over brush lands and other less densely forested areas. In winter they are found at lower elevations, usually below snow line, generally outside park boundaries, although common along the Nisqually River from Longmire Meadows downstream, along lower Tahoma Creek, and in the vicinity of the Ohanapecosh Hot Springs and lower Carbon River. Nearly all visitors to Mount Rainier National Park soon become familiar with this graceful animal so commonly seen along the trails and roadsides. Indeed, it is a rare occasion when one or more deer are not seen in a short drive or hike in any section of the park. It is only with the arrival of the snows that they are less frequently observed, and even during the winter months they are quite abundant at the lower elevations. [Illustration: Columbian black-tailed deer and fawns. The young were less than an hour old when this photograph was made.]