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walking a route within the habitat types. The habitat occupied by each bird species • <br />observed along the route was recorded. <br />Exhibit 11-3 shows the location of transects walked during the May investigations and the <br />route covered during the September survey. These routes included all major habitats and a <br />large portion of the study area. <br />Waterfowl. Due to the limited amount of aquatic habitat present on the Seneca II -W study <br />area, no detailed waterfowl studies were initiated during any of the study periods, <br />Incidental observations of all waterfowl, however, were recorded. <br />Threatened and Endangered Species. Federal and State information was consulted to <br />determine the potential for occurrence of any threatened or endangered wildlife species on <br />the Seneca II -W property. The Colorado Natural Heritage Inventory was also consulted <br />about the possible utilization of the Seneca II -W area by either threatened or endangered <br />wildlife species. <br />Reptiles and Ambhibians. Reptiles and amphibians observed during general reconnaissance • <br />and other field activities were identified and recorded whenever they were encountered. <br />Invertebrates. Field collection of invertebrates was accomplished on May 30 and 31, 1974. <br />A standard 50 -sweep transect, using a 15 -inch diameter sweep net was the collection method <br />employed. The samples were placed on ice in the field, transported to the laboratory, and <br />transferred to labeled vials containing a 70 percent isopropyl alcohol and 0.5 percent <br />glycerine preservative solution. Invertebrates were then hand sorted from the vegetation <br />and other debris in the sample before they were identified and classified. Within each <br />family taxon, species groups were identified, enumerated and recorded. <br />L. cations of the four sites sampled by the sweep net transects are depicted on Exhibit <br />11-3. Transect #1 was located in a forb dominated area; transect #2 sampled a sedge <br />meadow within the forb type habitat near the west end of Hubberson Gulch; transect #3 <br />traversed a sagebrush community near the ridge separating the Dry Creek and Sage <br />Creek drainages; and the fourth transect was located in a forb community near transect <br />#3. Each transect was approximately 50 yards long. <br />• <br />Benthic Invertebrates and Periphyton. The benthic and periphytic communities of the study <br />12 <br />