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<br />page-9 <br /> <br />1986 <br />No birds of this guild were observed on the reclaimed <br />habitats (P=0.01), although there was no difference in densities <br />among the other three habitats (Table 2b). Warbling vireos <br />(P=0.02) were most numerous on the aspen habitats, but the <br />density in interior aspen and mountain shrub was not different. <br />Solitary vireos (P=0.03) and lazuli buntings (P=0.02) were more <br />numerous on mountain shrub habitats. There was no difference in <br />the other seven members of the guild. <br />DISCUSSION <br />1985 <br />More birds were counted in aspen-edge habitat than any of the <br />other habitats; however there was not a significantly higher <br />density of any of the birds or guilds in ashen-edge than in the <br />aspen sites. Two birds, Cassin's finches and western tanagers, <br />were more numerous in aspen than in aspen-edge. <br />Five of the eight guilds had higher densities on one or both <br />of the aspen habitats than on the reclaimed habitats. Vesper <br />sparrows, song sparrows, and meadotivlarks, which normally inhabit <br />grassland habitat, were more numerous on the reclaimed sites than <br />on any of the other habitats; however, none were more numerous on <br />the reclaimed-edge sites than on the reclaimed sites. <br />Edge birds such as swallows, bluebirds, and fly catchers were <br />slightly more numerous on the aspen-edge than on aspen habitat, <br />although none were significantly different. The wide <br />explorations roads which dissected the aspen habitat probably <br />created habitat for "edge" birds similar to that provided by <br />aspen adjacent to reclaimed sites. Bird densities in both aspen <br />and aspen-edge habitats are high and more similar to that found <br />in edges than those found in extensive aspen habitats. <br />Because of the similarities in densities among aspen and <br />aspen-edge habitats and among reclaimed and reclaimed-edge <br />habitats, The aspen-edge and reclaimed-edge habitats were not <br />surveyed ir. 1986. <br />1986 <br />Aspen habitats had a higher density of birds than other <br />habitats. Interior aspen and mountain shrub habitats were not <br />different but both habitats had higher densities than reclaimed <br />habitats. Bird densities and species composition on mountain <br />shrub habitats were sort of a transition between reclaimed and <br />aspen habitats. American kestrels, black-billed magpies, <br />green-tailed towhees, vesper sparrows, and western meadowlarks <br />were common to mountain shrub and reclaimed sites but were not <br />observed on aspen habitats. Eight species (dusky flycatchers, <br />black-capped chickadees, warbling vireos, orange-crowned <br />