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• Sign cant ~Idlife Resources <br />Tables 1, 2, and 3 list wildlife species that potentially occur on-site according to the <br />Colorado Distribution Latilong Studies (CDOW, 1981, 1990, 1998). The latilong studies <br />address mammals, birds, reptiles, and amphibians. <br />.• <br />During our site investigation we encountered a numher of avian species within the <br />riparian corridor and around the pond located within the easternmost incised drainage. <br />Dozens of red-winged blackbirds (Agelaius phoeniceus) were roosting within trees <br />around the pond within the easternmost drainage. Other birds around the pond included <br />robins (Turdus migratorius), magpies (Pica hudsonia), and ared-tailed hawk (Buteo <br />jamaicensis). Other identified bird species within the riparian corridor included several <br />dozen American tree sparrows (Sptzelda arborea) and a Swainson's hawk (Buteo <br />swainsoni) in the light juvenile stage. Another Swainson's hawk (intermediate adult) was <br />perched along a fence line in the southwest comer of the site. The majority of birds were <br />feeding and roosting, none were nesting at the time of our investigation. <br />Deer (Odocoileus sp.) tracks were observed within the riparian comdor. An unidentified <br />small mammal den entrance was identified on the steep slope of the drainage to the east. <br />Seasonal Use <br />With the exception of bats, the mammals species encountered during the site inspection <br />or that potentially occur on-site are expected to be year-round residents or users of the <br />site. The carnivore and ungulate species are not restricted to this site and tend to have <br />relatively large home ranges (up to several squaze miles). The majority of rodent and <br />insectivore species can be expected to reside on-site throughout the year, though many <br />may hibernate during the cold months. Avian species may be year-round, temporary <br />migrants, or summer residents of the site. Yeaz-round residents would include the <br />waterfowl, raptor, gallinaceous birds, pigeons, owls, and woodpeckers. The majority of <br />the shorebirds and passerines would use the site during the spring, summer, and fall for <br />feeding or resting during migration. Amphibian and reptile species of the site are yeaz- <br />round residents. <br />Threatened and Endangered Species and Critical Habitat <br />Critical potential habitat for any identified species of special concern was evaluated. In <br />particulaz, critical potential habitat for the Preble's meadow jumping mouse (Z.apus <br />hudsonius preblei), Ute ladies'-tresses orchid (Spiranthes diluvialis), western burrowing <br />owl (Athene cunieularia), and bald eagle (Hadtaeetus leucocephalus) was evaluated. <br />Western burrowing owls occupy abandoned prairie dog and ground squirrel burrows on <br />open ground. No prairie dog colonies or ground squirrel burrows were observed on the <br />site, therefore no potential critical habitat for the western burrowing owl is present. <br />I (~ <br />