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i• <br />Ferruginous Hawk -The major thrust of the potential impact will be on the nesting success of this <br />bird. Ferruginous hawks do not tolerate human activity close to the nest during incubation and <br />disturbance may result in reduced nestling survival or nest desertion. Due to their habits of nesting <br />in low juniper trees and on the ground, this hawk is vulnerable to unintentional as well as intentional <br />harassment. <br />To minimize the detrimental impacts to this species, employees will be restricted to improved road <br />use. <br />Golden Eagle -Golden eagles are common and often seen in the area of potential impact, but <br />unlike ferruginous hawks, golden eagles are very tolerant of human activity, even during nesting. <br />There are three known active nesting sites in the vicinity of the projected mine portal, but it is <br />unlikely that more than one is used in any given year. <br />Since it was believed by Dr. Clayton M. White that the nest sites would not be abandoned during <br />portal activities, no specific measures are planned for the portal to accommodate the golden eagle. <br />However, no surface exhaust or ventilation fans will be located within 1/4-mile of the known nesting <br />sites. <br />• Bald Eaole -Impact to northern bald eagles is not a major concern in this project. <br />Pereorine Falcon -Impact to peregrine falcons is not a concern in this project. <br />Sage Grouse -The major concern of potential impact to sage grouse is the disruption of normal <br />reproductive behavior by destroying "leks". Since no "leks" have heretofore been located, the <br />applicant will support a thorough field research effort to locate "leks". If "leks" are observed, <br />appropriate mitigation measures will be developed with the assistance of Colorado Division of <br />Wildlife. <br />Rinp-necked Pheasant -Impact to this species is not a concern within the scope of this project. <br />Mountain Plover -Since the mountain plover is considered an accidental visitor or straggler in the <br />area of potential impact it is of little concern. <br />Mournino Dove -This species is so widespread and abundant that it is of minor concern. No <br />mitigation is necessary. <br />Burrowing Owl -The burrowing owl is thought by many to be declining in numbers as more and <br />more of the grassland habitat once occupied by large rodents upon whom burrowing owls are <br />• Permit Rev. 4 (11/2002) IV-49 <br />