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Vegetation There are no native vegetation communities extant on the pazcels. Both pazcels contain vegetation that can.be.categorized as mesic-xeric introduced ruderal herbaceous seral. The visually dominant species include whitetop (Cardaria draba)'a state listed noxious ._ weed, Canada thistle (Cirsium arvense) also a state listed noxious weed, annual mustazds (Descurainia species), and curly dock (Rumex crispus), a native eazly seral stage invader fort. . Significant Wildlife Resources Tables 1, 2; and 3 list wildlife species that potentially occur on-site according to the- Colorado Distribution latilong Studies (CROW., 1981, 1990, 1998). The latilong studies address vertebrates in the categories of mammals, birds, reptiles, and amphibians. During the site investigation few wildlife species were encountered. Several groups (50- 100 individuals) of black-tailed prairie dogs (Cynomys ludovicianus) are present on the Pazker pazcel. There was no evidence of native predators in the immediate area.. Several bird species were observed on the site. Magpies (Pica hudsonia), house sparrows (Passer domesticus), and, European stazlings (Sturmis vulgaris) were spotted within the parcels.. , Seasonal Use of Potentially Occurring Wildlife Species With the exception of bats, (identified from the Iist of potentially occurring- species), the mammals species encountered during the site inspection or tliat potentially occur on-site aze expected to be yeaz-round residents or users of the site. The carnivore and ungulate species are not restricted to this site and tend`to have relatively lazge home ranges (up to several squaze miles). The majority of rodent and insectivore species can be expected to reside on-site throughout the year, though many may hibernate during the cold months. Avian species may be year-round, temporary migrants, or summer residents of the site: Year-round residents would include waterfowl, raptors, gallinaceous birds, doves, owls, and woodpeckers. The majority of the shorebirds and passerines would use the site . during the spring, summer, and fall for breeding, feeding or resting during migration. Amphibian and reptile-species of the site are yeaz-round residents. Species of Special Concern The U.S. Fish and Wildlife Service lists twenty animal and thirteen plant species as threatened or endangered in the State of Colorado. Of those listed species, the U.S. Fish and Wildlife Service has expressed an interest in three that may potentially be present in the project site or.adjacent azeas, the bald eagle (Haliaeetus leucocephalus), the Preble's meadow jumping- mouse (Zcrpus hudsonius preblei), and the ljte ladies'-tresses orchid (Spiranthes diluvialis).