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<br />( 196~~) . 't'heir fail mostly consists of Lulbs, roots an3 stems of aquatic <br />\~ v~yetation. Musk,.'at habitat in tie study area is li:,,lLax! ko the msrshy <br />area in the riE~rian habitat; accorcL'njly, their d.istribvtion and al.;undance <br />is limited on the study area. <br />Three ~Unnison's prairie dog towns are located on the study area (P.p[.endi~t <br />A, Map 2). These towns were for*mrly one large foam but were divided by <br />road construction and mining activities (personal oomnunication, May 31, <br />1979, ~y ;ta-ro). A total o£ 16 adult prairie dogs were observed during a <br />blac3c-footed ferret survey of these tocas in late May, 1979. Ctinnison's <br />prairie c'.ogs inhabit open grassy and brushy areas at high elevations, <br />and are reskricted in distribution to south-eastern o~lorado (Lechlei tner <br />1959). <br />AVL°AU!v`A <br />Passerine Birds. Breeding and resident wintering passerines in the Nucla <br />• study area wire surveyed during early June, 1979 and Januaxy,1980 along 0.5 San <br />transects placed within major vegetation types represented in the study area. <br />The ces:sus technique was designed m quantify passerine abundance; however, <br />all avian species, including raptors and game birds, observed along the <br />transec"s were counted. The results of the breeding and wintering bird <br />surveys axe provided on computer print-outs in Appendix B, Part 2 for each <br />of the five vegetation types sampled lgrassland pasture, uplarxl sagebrush, <br />juniper, alfalfa field, and riparian). RRuese print-outs provide relative <br />- abundance indices (nuvber of isidividuals/Mn) and macrohabitat affinities for <br />each species encountered ara3 Shan-;on-t~7einer species diversity indices for <br />each habitat sampled. A list of all avian species ,positively identified <br />for the vucla study area during this and previous studies is provided in <br />Table 1. <br />Two major topics are considered in the discussion of breeding and wintering <br />passerine birds. First, the relative importance to avifauna of each habitat <br />type sampled is described: Determination of importance focuses on three <br />~ parameters: species diversity, eortimsition, and abundance. Secrond, the <br />occurrence, distribution and abundance of ixrq~ortant passerine species is <br />discussed. T_~ortant species are defined as those with a high relative <br />-?1.- <br />• !UN i 1 1980 <br />(Revised August 2006) Attachment 2.04.10-10-38 <br />