1988-04-11_PERMIT FILE - C1981008A (29)

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area. The reports accessed and utilized included: 1) Armstrong (1972); 2) the Colorado Mammal Distribution Latilong Study (CDOW 1982); 3) the Colorado Bird Distribution Latilong Study (Denver Museum of Natural History 1982); 4) the Colorado Reptile and Amphibian Distribution Latilong Study (CDOW 1981); 5) Stebbins (1966); and 6) the Durango Bird Club's checklist of birds of southwestern Colorado (Durange Bird Club, no date). Therefore, each vertebrate class noted above was covered by two regional distribution documents. Identifications were made with the aid of Armstrong (1972), Burt and Grossenheider (1952), Murie (1954), National Geographic Society (1987), and Stebbins (1966). Mammal common and Latin names follow the Colorado Mammal Distribution Latilong Study. The common names of birds follow the American Ornithologists Union (1983) checklist (plus the 1985 and 1987 supplements), and reptile and amphibian names follow Stebbins (1966). Latin names are presented in Tables 2 and 9 and for sake of brevity, are not used in the text except where discussing species not listed in the tables. Throughout the course of the baseline surveys, contact was made with several different wildlife agency personnel. This correspondence provided Peabody with additional information concerning the status of specific species or species groups in the study area. The following personnel were contacted during the course of this study: Rick Sherman of the Colorado Division of Wildlife (CDOW), Ron Arant (CDOW), Bob Clark (CDOW), Jeffrey Opdyke of the United States Fish and Wildlife Service (USFWS), Bob Leachman (USFWS), and Peter O'Connor (CMLRD). Dates of Field Work. Wildlife field sampling and observation activities were conducted in the Nucla East study area on the following dates: 20-22 May 1987, 26-29 May 1987, 9-10 July 1987, 19-22 July 1987, 17-18 August 1987, 15-16 September 1987, 7-10 October 1987, 28 October 1987, and 12-13 January 1988. The specific methods used in the study for each wildlife group are discussed below. Mammals. Mammals were surveyed on the study area by direct observation, capture, or detection of tracks, scats, dens, or nests. Conversations with Mr. Ron Arant provided information on several furbearing species and game species. Small mammals were sampled using Sherman live traps, Woodstream museum special snap traps, and Victor rat snap traps. Live traps were baited with oatmeal and snap traps were baited with peanut butter and oatmeal. Spring trapping was conducted on the evenings of 27-29 May 1987. Trapline locations are shown on Exhibit 11-3. The following sampling designs were used: 11-2-7 Revised 04/11/88