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Vegetation and Wildlife Baseline Survey Report <br />Linc Energy Little Snake River Project <br />diversity of fish and other aquatic species. The four federally endangered Colorado River system <br />fish species are discussed in the T &E section of this report. <br />5.10.2 Amphibians <br />Among amphibians in the exploration area, the boreal toad (Bufo boreas boreas) is a State <br />endangered species. In Colorado, the boreal toad is distributed throughout the Rockies from the <br />northern state border to Mineral and Hinsdale counties in the south at elevations between 7,500 <br />and 12,000 feet. It is found primarily in the vicinity of wetlands, wet meadows, streams, beaver <br />ponds, glacial kettle ponds, and lakes interspersed in subalpine forest (lodgepole pine, <br />Englemann spruce, subalpine fir, and aspen). In addition to the boreal toad, the Great Basin <br />spadefoot (Spea intermontana) and northern leopard frog (Rana pipiens) are species of state <br />concern that may occur in the project area. The Great Basin spadefoot occur primarily in the <br />western, more desert-like portion of northwestern Colorado and has a significant distribution in <br />this area. CDOW GIS data document the presence of northern leopard frogs in the project area. <br />Most of the observations of northern leopard frogs have been on Forest Service lands to the east. <br />Population numbers for these two species are not known. <br />5.10.3 Reptiles <br />There are no federally listed reptile species in the project area. The midget faded rattlesnake <br />(Crotalus viridis concolor), is a CDOW special concern species that may occur in the project <br />area. Midget faded rattlesnakes tend to associate with south to southeast facing rock outcrops. <br />Larger adults may use adjacent sagebrush communities to hunt during the warmest months of the <br />year (July /August) but are nearly impossible to locate during such behavior. Specific locations <br />have not been documented for this species. <br />Page 18 <br />Habitat Management, Inc. December 2011 <br />