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(Family Chrysomelidae) dominated sarples and accounted for over 78% of all <br /> insects collected. Plant hoppers (Family Fulgoridae) , t:.e next most common <br /> group encountered, accounted for only 6.2% of the insects collected. Both <br /> species are eommnly found on leafy vegetation. The fo.- er group is a very <br /> large family (nearly 1400 North American species) and .any species are quite <br /> eonrion. Some are serious pests of cultivated plants and 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 numbers, at least in 1979, to <br /> pose a serious problem to revegetation success. <br /> `ITiREXfENLD AND ENDANGERED SPECIES <br /> None of the five species listed as "endangered" by the Federal Register <br /> (January, 1979) that could possibly occur on the project area (American peregrine <br /> falcon, northern bald eagle, whooping crane, black-footed ferret, and gray wolf) <br /> were encountered during wildlife studies conducted during 1979-1980 at Nucla mine. <br /> Bald eagles generally nest in tall trees within a half rile of permanent 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 known bald eagle over-wintering area <br /> occurs along the Miguel River (personal communication, ,,arch 1980, Rick Sherman, <br /> DOW) . The Nucla study area probably occurs within the hunting area of the bald <br /> eagles wintering along the Miguel River (personal corTnrdcation, March 1980, <br /> Rick Sherman, DOW) ; however, none have been sighted on or near the study area to <br /> date. <br /> Peregrine falcons use cliffs most comronly as their nesting sites (Snow 1973) . <br /> Preferred nesting cliffs are generally quite high, often overlook water, and allow <br /> an extensive view of the surrounding countryside (Hickey 1942) . Areas such as <br /> these are not present in the vicinity of the Nucla study area. No peregrine <br /> falcons have been reported on the study area to date. <br /> The principal lvil,itat of black-footed ferrets is prairie dog colonies (Henderson <br /> et al. 1974) . Three Gwunison's prairie doq colonies are located <br /> -48- <br /> JUN i i 1280 <br />