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nesting on gentle north and east facing slopes or benches. Understory at the nest site is sparse or none. Nests are seldom found below 2300 meters (7500 feet) or farther than 275 meters (900 feet) from water. The reason for their decline is possibly due. to predator poisonings. On the West Elk Mine area, there is marginal nesting habitat in the major gulches and on some ridges which have aspen patches. The species tolerates nearby activity on roads and around developments but is very intolerant of approaches to the nest site by humans. Approaching to within about 250 feet of a nest will usually provoke a direct attack with potential serious Snjury. Any development in the area would have little if any impact on the species because the habitat is marginal and the species is tolerant of nearby activity. If a pair establishes a nest too close to activities, it may be necessary to curtail those activities for the duration of the nesting period. It will be obvious when activities are too close as the birds will readily attack humane in that area. Southwestern Willow Flycatcher, Empidonax traillii extimus The Willow Flycatcher is found most frequently along streams in Che lower mountains. It may also inhabit woodland edges and thickets where it is moist. It prefers relatively open areas free of trees but with medium shrub cover of willows, alders, or birch. The Southwestern race 1s not definitely known from Colorado. It is found in New Mexico near the Colorado border (Unitt 1987). Bailey and Niedrach (1965) listed flue specimens from western Colorado. Browning (1993) evaluated three of these and concluded that one "from Garfield County, is adastus" and "a bird fcom Summit County and one from Mesa County ... may be faded or represent intergrades between extimus and adastus." The extimus race differs from the adastus race by being paler above, especially on the head, with paler cheeks, the chestband less pronounced, and the belly and crissum paler yellow. Such subtle differences would be virtually Smpossible to evaluate in the field. No Willow Flycathers of any race were observed or heard in the vicinity of the West Elk Mine during threatened and endangered species surveys conducted during May and early July, 1994. There is potential habitat in a few areas along the North Fork of the Gunnison River and in Sylvester Gulch. If the Willow Flycatcher were to occur here, it would almost certainly be the adastus race or an intergrade with extimus. Protecting these would not be beneficial to the extimus race. Loggerhead Shrike, Lanius ludovicianus The Loggerhead Shrike is a bird of open country with scattered trees and shrubs. In western Colorado, the area northwest of Grand Junction where there are scattered junipers, greasewood, and sagebrush would be a primary Habitat. They are rarely seen in the mountains except during migraCion and there are no confirmed breeding records in the mountains (Andrews 6 Righter 1992). Miller (1931) gives the habitat for the race occurring in western Colorado as the Art emisia (sagebrush) association. These habitats do not occur near the West Elk Mine and no shrikes were seen in the vicinity during surveys in April, May, and early July. Any development in the area should have no effect on this species. Colorado River Cutthroat Trout, Salmo clarki pleuriticus The Colorado River Cutthroat Trout is found in small headwater streams to large rivers and lakes but it prefers clear, cold water (Griffith et al. 1981). Virtually all pure stocks are in headwater streams that are isolated in some way from lower waters. Hybridization with introduced trout has been rampant in the lower waters (Behnke S Zarn 1976). Besides hybridization, 2