Clayton, P. 1991. Field survey to Ball Ranch - Stop #15 on 29 July 1991.

Albuja, L. 1991. Lista de vertebrados del Ecuador. Escuela Politécnica XVI:163-203.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #9 23 May, 1991.

Burger, J., and M. Gochfeld. 1991. Human activity influence and diurnal and nocturnal foraging of sanderlings (CALIDRIS ALBA). Condor 93:259-265.

DeBruin, E. 1991. Field survey to Farmington Resource Area- ACEC Area #12 on 25 April 1991.

Echelle, A. A. 1991. Conservation genetics and genic diversity in freshwater fishes of western North America. Pages 141-153 in W. L. Minckley and J. E. Deacon, eds. Battle against extinction: native fish management in the American West. University of Ariz

Stoltz, J., and J. Schnell (eds.). 1991. Trout: The Wildlife Series. Stackpole Books, Harrisburg, Pennsylvania. 384 pp.

Knight, P.J., and A.C. Cully. 1991. A new species of Astragalus (Fabaceae) from southeastern New Mexico. Southwestern Naturalist 36(2): 198-200.

Mattson, D. J., and M. M. Reid. 1991. Conservation of the Yellowstone grizzly bear. Conservation Biology 5(3):364-372.

Anderson, J. (1991) Map of Red Canyon MSO Survey # 2. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Quinn, T. W., G. F. Shields, and A. C. Wilson. 1991. Affinities of the Hawaiian goose based on two types of mitochondrial DNA data. Auk 108:585-593.

DeBow, M.J. 1991. Letter to Jennifer Fowler-Propst of US Fish and Wildlife Service concerning discovery of two Pediocactus papracanthus. 16 Oct 1991.

Mills, Scott G. 1991. Miscellaneous notes on Coryphantha scheeri robustrispina. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.30.

The Nature Conservancy. Dec 9 1991. Addendum: Site Prospectus: Natural Land Protection Act, site identification program, presented to Natural Lands Protection Committee.

Zink, R. K., et al. 1991a. Mitochondrial DNA variation and the taxonomic status of the large-billed savannah sparrow. Condor 93:1016-1019.

Gibbons, J. W., and R. D. Semlitsch. 1991. Guide to the reptiles and amphibians of the Savannah River Site. Univ. of Georgia Press, Athens. xii + 131 pp.

Brozka, R.J. 1991. Progress report, 1988-1990: Land Condition-Trend Analysis Program, White Sands Missile Range, New Mexico. Prepared by U.S. Army Corps of Engineers, Construction Engineering Research Laboratory, Environmental Division. October 1991.

Howard, M. 1991. Sensitive threatened and endangered plant data form. May 8, 1991.

Paul, L. (1991) Unpublished Letter to Forest Supervisor, Subject: Peregrine Falcon Eyrie (Code Name Agua Dulce). Lincoln Supervisor's Office, Lincoln National Forest, USFS. 3 p.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #24 on 6 Aug 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-east fork Kutz Canyon-stop #13 on 7 May 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Tucker Canyon plot #8 on 1 May 1991.

USDA-FS. 1991. Forest Service map of Gila National Forest with EO and survey locations of Allium gooddingii. From Margaret Estabrook of Reserve Ranger District, Gila N.F.

DeBruin, E. Sept 1991. Special plant site survey form for Oenthothera organensis.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #23 on 8 May 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Aztec plot #7 on 25 April 1991.

Bull, E. L. and H. D. Cooper. 1991. Vaux's Swift nests in hollow trees. Western Birds 22:85-91.

Day, K. S., L. D. Flake, and W. L. Tucker. 1991. Characteristics of wild turkey nest sites in a mixed-grass prairie--oak-woodland mosaic in the northern great plains, South Dakota. Can. J. Zool. 69:2840-2845.

George, T.L., and L.C. McEwen. 1991. Relationships between bird density, vegetation characteristics, and grasshopper density in mixed-grass prairie of western North Dakota. Pages 465-475 in D.R. McCullough and R.H. Barrett, editors. Wildlife 2001: populat

Mahall, B.E. and R.M. Callaway. 1991. Root communication among desert shrubs. Ecology. 88:874-876.

Anderson, J. (1991) Map of Ox Canyon MSO Survey #2. Sandia Ranger District, Cibola National Forest, USFS. 1 p.

Newton, I., I. Wyllie, and A. Asher. 1991. Mortality causes in British Barn Owls Tyto alba with a discussion of aldrin-diedrin poisoning. Ibis 133: 162-169.

Russell, R. W., et al. 1991. A visual study of migrating owls at Cape May Point, New Jersey. Condor 93:55-61.

Thompson, D. B., J. H. Brown, and W. D. Spencer. 1991. Indirect facilitation of granivorous birds by desert rodents: experimental evidence from foraging patterns. Ecology 72(3):852-683.

Anderson, J. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Gennaro, A.L. 1991. Breeding of an urban population of Mississippi kites in Clovis, NM during the summer of 1990. Report to Nongame Program, NM Dept. of Game and Fish.

Madrid, R. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Silver City Ranger District, Gila National Forest, USFS. 4 p.

Sullivan, R.M. and Richard A. Smartt. 1991. Survey of the proposed ACTC facilities, including new roads, anchor facilities on the Little Burro Mountains, support area, winch site, cable drop zone, explosive storage site, and the jeep trail access from Nor

Wood, T. 1991. Results of 1991 amphibian monitoring on the Coronado National Forest. The Nature Conservancy and U.S. Forest Service.

Belthoff, J. R., and S. A. Gauthreaux, Jr. 1991. Partial migration and differential winter distribution of house finches in the eastern United States. Condor 93:374-382.

Derr, J. N. 1991. Genetic interactions between white-tailed and mule deer in the southwestern United States. J. Wildl. Manage. 55:228-237.

Hejl, S.J., and R.E. Woods. 1991. Bird assemblages in old-growth and rotation-aged Douglas-fir/ponderosa pine stands in the northern Rocky Mountains: a preliminary assessment. In D.M. Baumgartner and J.E. Lotan, editors. Interior Douglas-fir: the species

Lee, T. E., Jr., and M. D. Engstrom. 1991. Genetic variation in the silky pocket mouse, (Perognathus flavus) in Texas and New Mexico. J. Mamm. 72:273-285.

Person, D. K., and D. H. Hirth. 1991. Home range and habitat use of coyotes in a farm region of Vermont. J. Wildl. Manage. 55:433-441.

Smith, H. M., D. Chiszar, and W. Marmie. 1991. Peripheral variation in the lizard Sceloporus olivaceus, and its hybridization with S. undulatus. Bull. Maryland Herp. Soc. 27(3):128-145.

Carey, A.B., M.M. Hardt, S.P. Horton, and B.L. Biswell. 1991. Spring bird communities in the Oregon Coast Range. Pages 123-142 in L.F. Ruggiero, K.B. Aubry, A.B. Carey, and M.H. Huff, technical coordinators. Wildlife and Vegetation of unmanaged Douglas-fi

Georgiadis, N. J., P. Kat, H. Oketch, and J. Patton. 1991. Allozyme divergence within the Bovidae. Evolution 44:2135-2149.

Kie, J. G. 1991. Foraging behavior by mule deer: the influence of cattle grazing. J. Wildl. Manage. 55:665-674.

Nelson, D. W., C. Pidgeon, and J. G. Turner. 1991. Mature upper mixed-coniferous forest-montane chaparral. Journal of Field Ornithology (Supplement) 62:67-68.

S91SPELCNMUS, Legacy reference. Physical copy not yet located.

Rosenfield, R.N., J. Bielefeldt, R.K. Anderson, and J.M. Papp. 1991. Status reports: Accipters. Pages 42-49 in Proc. midwest raptor management symposium and workshop. National Wildlife Federation, Washington, DC.

Wiens, J. J., and T. A. Titus. 1991. A phylogenetic analysis of Spea (Anura: Pelobatidae). Herpetologica 47:21-28.

Platz, J. E. 1991. Rana berlandieri. Cat. Am. Amph. Rept. 508.1-508.4.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #23 on 5 Aug 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #11A, 27 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area - Hampton Arroyo ACEC plot #17 on 6 May 1991.

Burns, B. (1991) 1991 Meican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 20 p.

Human Systems Research, Inc. 1991. Mountains of sunlit silence: White Sands Missile Range inventory sample survey of the southern San Andres Mountains, New Mexico.

Painter, C.W. 1991. Results of the 1990 survey for the Gray-checkered whiptail (Cnemidophorus dixoni) on Bureau of Land Management (BLM) lands in southwestern New Mexico. 20 p.

Taiz, J.D. Reichenbacher, F.W. (1991) 1991 Inventory of Mexican Spotted Owl (Strix occidentalis lucida Nelson) in the Gila Natioanl Foret, Wilderness District. 33 p.