. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 16 CALIFORNIA FISH AND CAME c o D > 2200 1800 1400 1000 —o1983 * a 1984 D ? 1. April May June July FIGURE 3. Mean elevations inhabited by West Slope Sierra Nevada radio-collared does on specific dates during the spring migration, 1983-1985. In 1985, the driest of the three years, migration began about two weeks earlier than in 1984, with some deer leaving winter ranges in late April. By 14 May, one doe was in the Basin and the rest
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 16 CALIFORNIA FISH AND CAME c o D > 2200 1800 1400 1000 —o1983 * a 1984 D ? 1. April May June July FIGURE 3. Mean elevations inhabited by West Slope Sierra Nevada radio-collared does on specific dates during the spring migration, 1983-1985. In 1985, the driest of the three years, migration began about two weeks earlier than in 1984, with some deer leaving winter ranges in late April. By 14 May, one doe was in the Basin and the rest were in holding areas. Most deer arrived in the Basin during the following two-week period ending 30 May. Because of the difference in snowpack among years, deer spent less time on holding areas in 1985 compared to either 1983 or 1984 (Fig. 3). In 1983, we thought that pregnant does might drop their fawns in the holding areas below the basin since the traditional summer range was covered with snow and was uninhabitable until early July. Fawn: doe counts during June and July 1983 (Loft, unpubl. data) indicated fawns were numerous in the holding area below the Basin, but they were not observed in the Basin until late July. During the more normal snow years of 1984 and 1985, fawn: doe counts indicated that few fawns were dropped in the holding areas. East Slope The timing of migration by Rocky Mountain mule deer was similar to California mule deer all three years in terms of following the receding snowline. Deer began spring migration from Wild Oat Mountain and moved to Stinkard Valley where they remained for up to 4 weeks until snow levels receded at higher elevations, and then migrated west to Bagley Valley where they stayed for another 1 -2 weeks (Fig. 2). Deer then migrated up the Wolf Creek drainage, crossed the Sierra Crest near Wolf Creek Pass, and traveled down into the Clark Fork drainage to the Fence Creek holding area. From there, Rocky Mountain mule deer moved up i
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