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oak in an opening within the aspen community sampled by pellet group transect PO -3. This <br />• <br />area was also covered by deep snow throughout the winter. <br />Small Mammals. Small mammal investigations on the Seneca II -W study area were conducted <br />to determine species occurrence and relative abundance in selected habitat types. North <br />American Census of Small Mammal (NACSM) (Calhoun, 1959) traplines were established to <br />census small mammals. Each 950 -foot transect consisted of 20 trap stations placed at <br />50 -foot intervals throughout selected habitat types with two snap traps baited with either <br />peanut butter or baby food set at each station. Single transects were established in each <br />of five habitat types on May 21, 1974, and removed on May 24, 1974. The traplines were <br />run for three consecutive nights and inspected each morning during the census period for a <br />total of 110 trap nights of effort in each habitat type sampled. Trapped animals were <br />identified to the species level with age, sex, reproductive status and general condition <br />also being recorded where possible. In addition to the standard traplines, six individual <br />traps were placed along a small watercourse near the forb habitat trap site in an attempt <br />to capture animals which might be susceptible to trapping in that area and not in others. <br />Small mammal trapping sites were selected to sample five habitats occurring on the study is <br />area. Exhibit 11-2 shows the location of these five traplines. Line 1 sampled an aspen <br />community near the top of the ridge running north -south throughout the study area; line 2 <br />w.3s located on a sagebrush covered knoll; a mixed brush community was chosen as the site <br />for line 3; a forb dominated area comprised the major habitat of site 4; and site 5 <br />sampled a rock outcropping typical of the sides of major gulches in the study area. <br />Medium -Sized Mammals. Medium-sized mammals such as lagomorphs, nongame predators, and a <br />few rodents (porcupine and beaver) were sampled soley by recording all opportunistic <br />observations. Habitat affinities for these species were recorded from observation data. <br />The occurrence of these species on the Seneca II -W property was determined by either <br />direct observation, vocalization, or sign. <br />R.3ptors. All raptors observed during the 1974 and 1979 wildlife field investigations were <br />recorded as to species, and where possible, age class, and sex. Particular emphasis was <br />placed on identifying all raptors observed during the winter and early spring aerial big <br />game surveys. <br />All sandstone cliffs that occur on or near the study area were searched for raptor nests <br />IR <br />• <br />