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7.0 Literature Cited <br /> Andrews, Robert and Righter, Robert. 1992. Colorado Birds. Denver Museum of <br /> Natural History. Denver, CO. <br /> Caro,T.M., and G. O'Doherty. 1999. On the Use of Surrogate Species in Conservation <br /> Biology. 13:805. <br /> Colorado Parks and Wildlife. 2021.Natural Diversity Information Source. Colorado <br /> Species Distribution Maps. Available https://ndismaps.nrel.colostate.edu <br /> Accessed: April 9, 2021). <br /> Colorado Natural Heritage Program. 2021. Garfield County tracked avian data. <br /> Available https://cnhp.colostate.edu/(Accessed April 12, 2021). <br /> Lambeck,R. J. 1997.Focal Species: A Multi-Species Umbrella for Nature Conservation. <br /> Conservation Biology. 11:849. <br /> NatureServe. 2021.NatureServe Explorer [web application].NatureServe, Arlington, <br /> Virginia. Available https://explorer.natureserve.org/. (Accessed: April 19, 2021). <br /> Robbins, Chandler S. et al. 1983. A Guide to Field Identification—Birds of North <br /> America. Golden Press. New York. <br /> Roberge,J.M., and P. Angelstam. 2004. Usefulness of the Umbrella species Concept as a <br /> Conservation Tool. Conservation Biology. 18:76-85. <br /> • <br /> 10 <br />