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American • Pinon-juniper woodlands and coniferous and riparian forest <br />Peregrine Falco Y near cliffs. Nests on ledges of high cliffs away from human <br />Falcon peregrines disturbance. <br /> • State species of special concern <br /> Falco • Grasslands, shrublands, and alpine tundra. Nests on cliffs or <br />Prairie Falcon mexicanus Y bluffs in open areas. <br />Great Horned Bubo • Occupies diverse habitats including riparian, deciduous and <br />Owl virginianus N coniferous forests with adjacent open terrain for hunting. <br />Northern Saw- Aegolius N • Mountain and foothills forest and canyon country. <br />whet Owl acadicus Significant use of pinon-juniper woodland and Douglas-fir. <br />Long-eared Asio <br />otus <br />N • Occupies mixed shrublands. Nests and roost in sites in dense <br />Owl cottonwoods, willows, scrub oak, junipers and dense forest of <br /> mixed conifers and aspens. <br />Biologist surveys observed no active raptor nest sites within the survey area boundary. <br />In general, raptor nest cliffs were noted along the canyon walls. Pinyon-juniper woodlands <br />(Pinus edulis-Juniperis osteosperma) in the vicinity are marginal raptor nesting habitat due to the <br />small stature of the trees and open nature of the stands. With the exception of riverine <br />cottonwoods, trees are generally in the 10 to 15 foot height class. The riparian zone along the <br />Gunnison River previously supported mature cottonwood galleries. While galleries exist both <br />downstream and upstream, most cottonwoods were bull dozed when the river bottom was cleared <br />by blade. Surveys in the area detected no nests. No raptor nests were observed in remaining <br />cottonwood trees. Suitable tree habitat at pit sites has been previously altered beyond use and <br />other tree and cliff habitat is greater than 0.5 miles from GRGP. <br />Birds of Conservation Concern. Threatened, or Endangered (other than raptors) <br />In addition to raptors presented above, biologists reviewed habitat requirements and likely <br />presence of the following sensitive BOCC and their habitat in order to help evaluate the potential <br />impacts of this GRGP (see Table 2). The Gunnison Sage Grouse (Centrocercus minimis) is a <br />Colorado Plateau BOCC listed species. Due to the total lack of vegetation and habitat on or near <br />GRGP, this important species, while not over-looked, is not part of this discussion. <br />Table Z. Sensitive & Migratory Bird Species that may be present in the GRGP area <br />Common Name Scientific Name Habitat & Breeding Records <br />Pinyon Jay Gymnorhinus Pinon-juniper woodlands. Nests in pinons or junipers. <br /> cyanocephalus Confirmed breeder in Mesa County but not likely in the vicinity of the <br /> GRGP. <br /> Dense shrublands and scrub forests of Gambel oak, pinon juniper, <br />Virginia's V <br />n <br />ra mountain mahogany or ponderosa pine. Nests on the ground among <br />Warbler iae <br />viirginiagi dead leaves or on rock or log overhangs. <br /> Unlike] nester in the GRGP area. <br />Gunnison River Gravel Pit Wildlife Information