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The sex ratio of all deer mice captured was .52 males to .48 females. ~e <br />mixed brush vegetation type skewed a one to one male-female ratio (.50 to .50) • <br />while the aspen type showed a larger amount of males (.62 males to .38 females). <br />The upland sagebrush type showed more females (.43 males to .57 females). <br />The least chipmunk was also captured in all vegetation types with the <br />exception of the riparian type. This diurnal sciurid aocowited for 12.658 <br />Of the total mall mammal atvinria*.ro and was the second most abundant species <br />encountered during the sampling program. The least chigmmk can be found <br />in acid as well as rather rroist environments. It does not h;hornate <br />in the winter, but may remain in its burrow during extended periods of cold. <br />Primary foods include green vegetation, fruits, nuts, berries and seeds <br />although insects are also eaten occasionally (Iechleitner,1969). The least <br />chipmunk did not show an affinity for any vegetation types sampled. The <br />sex ratio of all least chipmunks captured at Seneca II mine was .33 males <br />to .67 females. <br />The long-tailed wle was captured only in the aspen vegetation type. Three • <br />individuals were captured, thus representing 3.03 percent of the total small <br />manmal aknaxlance. Habitat of the long-tailed wle includes streamb~~rilcs, <br />rmuntain r[eadows area occasionally dry situations. The long-tailed wle also <br />spends time in brushy areas in the winter (Iechleitner, 1969). It feeds on <br />green vegetation, bark, and occasionally seeds and berries. Nests are <br />usually mane at the end of poorly developed tunnels, although above ground <br />nests have also been observed (Lechleitner,19691. <br />Other Mammals <br />Small and medium-sized mammal species not captured in live <br />traps but whose presence on the Seneca II mine site has been substantiated <br />during other field activities include the following species of indents <br />and lagomorphs: spotted ground squirrel (Spermophilus spilosoma), <br />Richardson's ground ~,;,,-el (Sperrrophilus richardsonii), golden mantled <br />ground squirrel (Spexaophilus lateralis) , yellow-bellie3 marrmt ~Sartrota <br />flaviventris), northern pocket gopher (T talpoides), beaver <br />(Castor canadensis), porcupine (Erethia~n dorsatum), snowshoe bare (Ie us <br />americanus), and white-tailed jackrabbit (I~us townsendii). A imre • <br />-32- <br />