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L'resence of animal species as indicated by capture, sightings, tracks, <br /> scats, dens, food remains, or other definitive signs was recorded on wildlife <br /> observation forms. In addition, important wildlife habitat was noted <br /> and mapped. <br /> Hall and Kelson (1959) was the nomenclatural authority used for manuals. <br /> Murie (1954) was used for identifying animal sign. Avian nomenclature followed <br /> the American Ornothologist's Union Checklist of North American Birds (AOU <br /> 1957) as updated by the 32nd supplement to the checklist (AOU 1973) . <br /> LNVER`IEBRATES <br /> Sweep-net samples were used to determine the species composition and relative <br /> abundance of insects in the herb-forb-grass section of the two major vegetation <br /> types on the study area (see Results, page 45) . Of particular concern in the <br /> study was to identify groups of insects (i.e. , grasshoppers) that might pose a <br /> threat to revegetation success. At five randomly selected locations in uplanC, <br /> sagebrush and grassland pasture, a sweep net sample consisting of five full <br /> sweeps (approximately 10 m2) was collected. Five samples also were taken from <br /> a revegetation plot at Nucla mine. Insects were killed with cyanide gas and <br /> identified and counted by a qualified entcmlogist. <br /> THREAT NI M AND ENDANGERED WILDLIFE SPECIES <br /> According to the Federal Register (January 17, 1979) five animal species <br /> listed as endangered could possibly occur in the study area: <br /> Fa,oc Z�Cregr:nz1,- anu l im - American peregrine falcon <br /> Hali.aeetus ZeucocephaZus - northern bald eag Le <br /> Grus americana - whooping crane (as a migrant) <br /> I,lustela nigripes - black-footed ferret <br /> Canis lupus - gray wolf <br /> Based on the results of interviews with DCW personnel and local residents and <br /> -]1- <br /> JUN t t �aeo <br />