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Kelley, J.R. 2001. American Woodcock Population Status 2000. US. Fish and Wildlife Service, Laurel, Maryland. 15 pp.

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Johnson, K., L. Delay, P. Neville. 2000. Use of satellite imagery to detect prairie dog towns. Natural Heritage New Mexico Publ. No. 00-GTR-322. Natural Heritage New Mexico, University of New Mexico, Albuquerque, NM. 15 p.

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Goldberg, S. R. 2000. Reproduction in the glossy snake, Arizona elegans (Serpentes: Colubridae) from California. Bulletin of the Southern California Academy of Science 99:105-109.

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Haxton, T. 2000. Road mortality of snapping turtles, Chelydra serpentina, in central Ontario during their nesting period. Canadian Field-Naturalist 114:106-110.

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Walters, D. M., and B. J. Freeman. 2000. Distribution of Gambusia (Poeciliidae) in a southeastern river system and use of fin ray counts for species determination. Copeia 2000:555-559.

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Wilgenbusch, J., and K. de Queiroz. 2000. Phylogenetic relationships among the phrynosomatid sand lizards inferred from mitochondrial DNA sequences generated by heterogeneous evolutionary processes. Systematic Biology 49:592-612.

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Boyne, A. 2000. Draft update COSEWIC status report on Piping Plover (Charadrius melodus). Committee on the Status of Endangered Wildlife in Canada, Ottawa. 45pp.

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Unknown (2000) Northern Goshawk Annual Report, 200, Lincoln National Forest, Smokey Bear Ranger District. Lincoln Supervisor's Office, Lincoln National Forest, USFS. 14 p.

Dinerstein, E., D. Olson, J. Atchley, C. Loucks, S. Contreras-Balderas, R. Abell, E. Inigo, E. Enkerlin, C. Williams, and G. Castilleja. 2000. Ecoregion-based conservation in the Chihuahuan Desert, A biological assessment. World Wildlife Fund. 376 p.

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Fish and Wildlife Service. 2000. Candidate and Listing Priority Assignment Form; Sceloporus arenicolus. 7 p.

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Hobson, K. A., and E. Bayne. 2000. Breeding bird communities in boreal forest of western Canada: Consequences of "unmixing" the mixedwoods. Condor 102:759-769.

Proudfoot, G. A., and R. R. Johnson. 2000. Ferruginous Pygmy-Owl (Glaucidium brasilianum). No. 498 IN A. Poole and F. Gill (eds.), The birds of North America. The Birds of North America, Inc. Philadelphia, PA. 20pp.

Weisrock, D. W., and F. J. Janzen. 2000. Comparative molecular phylogeography of North American softshell turtles (Apalone): implications for regional and wide-scale historical evolutionary forces. Molecular Phylogenetics and Evolution 14:152-164.

Rubin, E. S., W. M. Boyce, and V. C. Bleich. 2000. Reproductive strategies of desert bighorn sheep. Journal of Mammalogy 81:769-786.

Stein, B.A., L.S. Kutner, and J.S. Adams. 2000. Precious heritage: the status of biodiversity in the United States. Oxford University Press. 399 p.

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Propst, D.L. (2000) Memo to San Francisco Sampling Personnel, Subject: Sampling Data. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 7 p.

Bull, E. L. 2000. Vaux's Swift. IN The Oregon Birds Forum, available at: http://www.orst.edu/pubs/birds/index.htm. Accessed 6 February 2001.

Smith, K.G., J.H. Withgott, and P.G. Rodewald. 2000. Red-headed Woodpecker (Melanerpes erythrocephalus). In A. Poole and F. Gill, editors, The Birds of North America. The Birds of North America, Inc., Philadelphia, PA. 18 pp.

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Desert Botanical Garden. 2000. April 5-last update. Desert Botanical Garden's Center for Plant Conservation National Collection: Amsonia tharpii (Tharp's blue star). Online. Available: http://www.dbg.org/Collections/amsonia_tharpii.html. Accessed 2003, Ap

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Unknown (2000) Mexican Spotted Owl Annual Report, Lincoln National Forest, Smokey Bear Ranger District, 2000. Lincoln Supervisor's Office, Lincoln National Forest, USFS. 11 p.

Pashley, D. N., C. J. Beardmore, J. A. Fitzgerald, R. P. Ford, W. C. Hunter, M. S. Morrison, and K. V. Rosenberg. 2000. Partners in Flight: Conservation of the land birds of the United States. American Bird Conservancy, The Plains, VA.

Askins, R. A. 2000. Restoring North America's birds: lessons from landscape ecology. Yale University Press. 320 pp.