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• (Family Cluysorrelidae) dcaninated sa-;~les and accounted 'or over 78% of all <br />insects collected. Plant hoppers (Family Fulgoridae), ~.e next most crommon <br />group encountered, accounted for only 6.28 of the insects collected. Both <br />species are cotmpnly found on leafy vegetation. The for-er group is a very <br />large family (nearly 1400 Nord-, Areric~in species) and :any species are quite <br />eortnnn. Some are serious pests of caltivated plan`s a.-.;: a few act as vectors of <br />plant disease. None of the groups encountered in upland sagebrush or in the <br />other types sampled appear to be in sufficient n•~:r;,bers, at least in 1979, to <br />pose a serious problem to revegetation success. <br />THRFI.TENE~ AND ENDANC~RID SP)xIFS <br />None of the five species listed as "endangered" by the Federal Register <br />(Januazy, 1979) that could possibly occur on the project area (American peregrine <br />falcon, northern bald eagle, whooping crane, black-footed ferret, and gray ~..o.lf) <br />were en~untered during wildlife studies conducted during 1979-1980 at Nucla mine. <br />Bald eagles generally nest in tall trees within a half rile of pe_~-manent water <br />• (Snow 1973}, since successful nesting usually requires a dependable and readily <br />available food supply generally consisting of fish (Spencer 1976). The nearest <br />potential nesting habitat for bald eagles occurs on the Miguel River, approximately <br />seven miles from the study area. The nearest knowr, bald eagle over-wintering area <br />occurs along the Miguel River (personal e~munication, ?~.rch 1980, Rick Sherman, <br />DGW). The Nucla study area probably occurs within the n,:nting area of the bald <br />eagles wintering along the Miguel Rive:- (personal corrra::ication, March 1980, <br />Rick Sherman, D04]); however, none have been sighted or. or near the study area to <br />date. <br />Peregrine falcons use cliffs most cotmnnly as their nesting sites (Snow 1973). <br />Preferred nesting cliffs are generally quite hiy-h, otter. overlook water, and allow <br />an extensive view of the surrow~aing countryside (Hic)cey 1942). Areas such as <br />these are rot present in the vicinity of the Nucla study area. No peregrine <br />fal~ns have been reported on the study area to date. <br />The principal hni,itat of black-footed IPrrets is prairie dog colonies (Henderson <br />• et al. 1974). Three Gluuuson's prairie doq colonies are ]orated <br />-48- <br />J U N L 1 t9E0 <br />