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9.0 REFERENCES <br />Andrews, R. and R. Righter. 1992. Ca]orado birds. Denver Museum of Life History; Denver. <br />Buehler, D. A. 2000. Bald Eagle (Haliaeetus IeucocePhalvs). In The Birds ofNorth America, <br />No. 506 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA. <br />Bureau of Land Management. Gunnison Sage Grouse Conservation Plan obtained on the web at <br />(http://www. co.blm. gov/gra/sagegrouse. htm#assessment). <br />Colorado Natural Heritage Program (CNHP). 2005, State-wide Potential Conservation Areas. <br />Available at: http:/,'www.cnhp.colostate.edu!gis.html <br />Ecosphere Environmental Services Inc. 1995. The Farmington District endangered, threatened <br />and sensitive plant field guide. Bureau of Land Management, Farmington District, New <br />Mexico Desert Dolphin, Inc, Durango, Colorado. <br />Ehrlich, P. R, D. S. Dobkin, and D. Wheye. 1988. The birder's handbook Simon & Schuster <br />Inc., New York, NY. <br />Elmore, F. H. 1976. Shrubs and trees of the Southwest uplands. Southwest Parks and <br />Monuments Association, Tuscon. <br />Fisher, C., D. Pattie, and T. Hartson. 2000. Mammals of the Rocky Mountains. Lone Pine <br />Publishing, Vancouver, BC. <br />Hammerson, G. A. 1999. Amphibians and reptiles in Colorado. University Press of Colorado, <br />Niwot, CO. <br />Hughes, J. M. 1999. Yellow-billed Cuckoo (Coccyzus americanns). In The Birds of North <br />America, No. 418 {A. Poole and F. Gill, eds.). The Birds of North America; Inc., <br />Philadelphia, PA. <br />Komarek, S. 1994. Flora of the San Juans: A field guide to the mountain plants of Southwestern <br />Colorado. Kivaki Press, Durango. <br />La Plata County. 2005. website: http://www.co.laplata co.us/nrofile.htm. <br />Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Mirrton, A. Krat~ and C. Spurrier. 1997. <br />Colorado Rare P4mt Field Guide. Prepared for the Bureau of Land Management, the <br />U.S. Forest Service and the U.S. Fish and Wildlife Service by the Colorado Natural <br />Heritage Program. <br />U.S.D.A. Soil Conservation Service. 1988. Soil Survey of La Plata County Area, Colorado. <br />Biologicat Assessment jor the Ignacio Pit at La Boca Canyon <br />