Sage Grouse . On April 15, 1981, 11 males were observed displaying 

 at lek No. 4 (DNRC 1978). Five males were seen there in 1982, and 25 displaying 

 males were also seen at lek No. 6, about 1 mile west-northwest of lek No. 

 4. 



Ring-necked Pheasant . Figure 1 shows year-to-year changes in June 



sample abundances of ring-necked pheasants as sampled in five roadside wildlife 



surveys. Sample abundances did not differ significantly (t-test, p > .20) 

 between 1980 and 1981. 



Great Horned Owl . None of the previously used nest sites were known 

 to be active in 1981. 



Desert Cottontail . Results of the 1981 lagomorph survey are presented 

 in Table 4 (see also Figure 2). 



White-tailed Jackrabbit . The number of jackrabbits observed during 

 the 1980 lagomorph survey (Table 4) does not differ significantly from the 

 number observed in 1979 (t-test, p>.20) (Figure 2). 



Mule Deer . A summary of mule deer observations during the study period 

 is presented in Table 5. Production ratios obtained during the period 1977-1980 

 are shown in Figure 3. These were based on September-October data since 

 summer foliage limits pre-September observations of fawns and since hunting 

 mortality directly influences age structure in November populations. 



Aerial census data are presented in Table 6. It should be emphasized 

 that the low numbers of deer observed during the summer reflect decreased 

 observability at this season and do not necessarily indicate a corresponding 

 decrease in abundance. Since observability is highest in winter, both density 

 and distribution estimates are based on the winter aerial census. Figure 

 4 shows winter density indices obtained since 1976. Since the census data 

 in Table 6 represent the minimum number known to be present, the density 

 indices shown in Figure 4 may be somewhat lower than true densities. 



Monthly mule deer winter density indices obtained during aerial censuses 

 were averaged for each of the 114 sections in the Mine Study Area for the 

 winter of 1981-1982 and for all winters since 1976. These data were not 

 used to create density index isopleths, as was done in previous years, but 

 are presented in tabular form in Appendix D. 



White-tailed Deer . A summary of white-tailed deer observations made 

 during the study period is presented in Table 7. 



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