Sakai, H. F., and B. R. Noon. 1991. Nest-site characteristics of Hammond's and Pacific-slope flycatchers in northwestern California. Condor 93:563-574.

Zink, R. K., and D. L. Dittman. 1991. Evolution of brown towhees: mitochondrial DNA evidence. Condor 93:98-105.

Apa, A. D., D. W. Uresk, and R. L. Linder. 1991. Impacts of black-tailed prairie dog rodenticides on nontarget passerines. Great Basin Nat. 51:301-309.

De Smet, K.D., and M.P. Conrad. 1991. Status, habitat requirements, and adaptations of Ferruginous Hawks in Manitoba. Pages 219-221 in G.L. Holroyd, G. Burns, and H.C. Smith, editors. Proceedings of the second endangered species and prairie conservation w

Hines, T. D., and R. M. Case. 1991. Diet, home range, movements and activity periods of swift fox in Nebraska. Prairie Naturalist 23:131-138.

Procter-Gray, E. 1991. Female-like plumage of subadult male American redstarts does not reduce aggression from other males. The Auk 108:872-9.

Strickland, D. 1991. Juvenile dispersal in gray jays: dominant brood member expels siblings from natal territory. Can. J. Zool. 69:2935-2945.

Goldsmith, F.B. 1991. Monitoring for Conservation and Ecology. Chapman and Hall, New York, New York, USA.

Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes: North America north of Mexico. Houghton Mifflin Company, Boston, Massachusetts. 432 pp.

Stuart, J. N. 1991. Cnemidophorus exsanguis. Cat. Am. Amph. Rept. 516.1-516.4.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #1 22 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Adobe Downs Ranch, stops #12, 13, 14, on 1 May 1991.

Persecetti, C. and J. Horton. 1991. USGS Capitan Peak 7.5' topo map with Astragalus kerrii from 23-31 May 1991 field survey to Capitan Mts for TNC.

Madrid, B. Arvedson, C. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Silver City Ranger District, Gila National Forest, USFS. 2 p.

Schemnitz, S.D. 1991. Summary of Gould's turkey observations Gray Ranch - Animas and San Luis Mts. Unpub table for NMSU Dept of Fishery and Wildlife Sciences. 4 pp.

DeBruin, E. Sept 1991. Special plant site survey form, New Mexico for Perityle cernua.

Bailowitz, R. A. and J. P. Brock. 1991. Butterflies of Southeastern Arizona. Sonoran Arthropod Studies, Inc., Tucson, AZ. 342 pp.

Bork, A. M., C. M. Strobeck, F. C. Yeh, R. J. Hudson and R. K. Slamon. 1991. Genetic relationship of wood and plains bison based on restriction fragment length polymorphisms. Canadian Journal of Zoology 69: 43-48.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop # 1A, 21 May, 1991

Cronin, M. A. 1991b. Mitochondrial and nuclear genetic relationships of deer (Odocoileus spp.) in western North America. Can. J. Zool. 69:1270-1279.

S91SPESBNMUS, Legacy reference. Physical copy not yet located.

Grubb, T. G., and R. M. King. 1991. Assessing human disturbance of breeding bald eagles with classification tree models. J. Wildlife Management 55:500-511.

Meehan, W.R. (ED) 1991. Influences of forest and rangeland management on Salmonid fishes and their habitats. American Fish Soc. Spe. Pub. 19, Bethesda, MD.

Hussell, D. J. T. 1991a. Fall migrations of alder and willow flycatchers in southern Ontario. Journal of Field Ornithology 62(2):260-270.

Norden, A. W., and B. B. Norden. 1991. The Mediterranean gecko (HEMIDACTYLUS TURCICUS) in Baltimore, Maryland. Maryland Nat. 33(3-4) [1989]:57-58.

Page, G. W., et al. 1991. Distribution and abundance of the snowy plover on its western North American breeding grounds. J. Field Ornithology 62:245-255.

Steidl, R. J., and C. R. Griffin. 1991. Growth and brood reduction of mid-Atlantic coast ospreys. Auk 108:363-370.

Advanced Sciences, Inc. 1991. Threatened and endangered species survey at ABC Flip side, White Sands Missile Range. WSMR Environmental Services Report no. REC-EA-03-88, prepared under WSMR contract DAAD07-90-C-0018. 4 April, 1991. . 14 p.

Hurley, T. Schwarz, H.R. (1991) Northern Goshawk Inventory Form - 1991 . Sandia Ranger District, Cibola National Forest, USFS. 3 p.

Reichenbacher, F.W. 1991. Illustrated manual of rare cacti of the United States and Puerto Rico. Unpublished manuscript draft on Toumeya papyracantha [Pediocactus papyracanthus] for southwest. Field biologists, Univ. of AZ and USFWS. May 1991. 4 pp.

Turner, J. W., Jr., and J. F. Kirkpatrick. 1991. New developments in feral horse contraception and their potential application to wildlife. Wildl. Soc. Bull. 19:350-359.

Anderson, D.L. 1991-1995. Range activities log book. WSMR Environmental Services.

Gorresen, M. Schwarz, H.R. (1991) Northern Goshawk Inventory Form - 1991. Sandia Ranger District, Cibola National Forest, USFS. 4 p.

Malville, L. et al. 1991. Summary report of surveys for Mexican spotted owls (Strix occidentalis lucida) conducted in the San Juan resource area of the Bureau of Land Management in southwestern Colorado

Sivinski, R., and K. Lightfoot. 1991. NM rare plant occurrence record data sheet of 18 June 1991 for Erigeron acomanus. EMNRD, Santa Fe, NM.

Black, C. and J. Black. 1991. Field survey to Gray Ranch - Indian Creek Canyon on 23 June 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #36 29 May, 1991.

Horton, J. and C. Persichetty. 1991. Field survey to Capitan Mts. - Pierce Canyon Arroyo at Forest Rd. 57, 23 May 1991.

Reed, S. and P. Ryder. 1991. Field survey to Capitan Mts - ridge E. of Ellis Canyon. 23 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #28 28 May, 1991.

Reed, S.and P. Hyder. 1991. Field survey to Capitan Mts - Matney Spring. 24 May 1991.

Berkey, G. 1991. Yellow Rails: birds that go click in the night. North Dakota Outdoors, March 1991:8-9.

Connelly, J.W., W.L. Wakkinen, and A.D. Apa. 1991. Sage grouse use of nest sites in southeastern Idaho. Journal of Wildlife Management 55(3):521-524.

U.S. Fish and Wildlife Service (USFW). 1991. Endangered and threatened wildlife and plants; final rule to list the Alamosa springsnail and the Socorro springsnail as endangered. Federal Register 58 (189): 49646-49649. 30 September 1991.

Kennedy, P. K., et al. 1991. Genetic variability in natural populations of the gray wolf, Canis lupus. Canadian Journal of Zoology 69:1183-1188.

Mattson, D. J., B. M. Blanchard, and R. R. Knight. 1991a. Food habits of Yellowstone grizzly bears, 1977-1987. Canadian J. Zoology 69:1619-1629.

Rinne, J. N. 1991. Habitat use by spikedace, Meda fulgida (Pisces: Cyprinidae) in southwestern streams with reference to probable habitat competition by red shiner, Notropis lutrensis (Pisces: Cyprinidae). Southwestern Naturalist 36:7-13.

Spencer, C. N., B. R. McClelland, and J. A. Stanford. 1991. Shrimp stocking, salmon collapse, and eagle displacement. BioScience 41:14-21.

Dunmire, W.W. 1991. T&E and sensitive plant survey, Ladron Mountains ACEC, Socorro Resource Area. Prepared for the BLM by the Nature Conservancy, NM Field Office. February 1, 1991.

Jennings, R. et al. 1991. Unpub. field notes for April 8-11, 1991 trip to Alamosa Warm Springs, Beaverhead, Cooney Tanks, Gillette Tank, Reserve and Tularosa River. 6 pp.

Sivinski, R. 1991. New Mexico rare plant occurrence record data sheet for Hymenoxys brachyatis. NM Forestry Division, Santa Fe, NM. June 24, 1991.

Adkins, R. M., et al. 1991. Hybrid breakdown in Peromyscus leucopus and examination of the recombinational-breakdown model. J. Mamm. 72:535-541.

DeGraaf, R.M., V.E. Scott, R.H. Hamre, L. Ernst, and S.H. Anderson, 1991. Forest and Rangeland Birds of the United States: natural history and habitat use. Agriculture Handbook 688, USDA Forest Service. January 1991.

Byers, S. M., and J. R. Cary. 1991. Discrimination of mallard strains on the basis of morphology. J. Wildl. Manage. 55:580-586.

Gibeau, M. L., and P. C. Paquet. 1991. Evaluation of Telazol for immobilization of black bears. Wildlife Society Bull. 19:400-402.

Johnson, B. K., F. G. Lindzey, and R. J. Guenzel. 1991. Use of aerial line transect surveys to estimate pronghorn populations in Wyoming. Wildl. Soc. Bull. 19:315-321.

Nudds, T. D., and R. W. Cole. 1991. Changes in populations and breeding success of boreal forest ducks. J. Wildl. Manage. 55:569-573.

Sandercock, F.K. 1991. Life history of coho salmon (Oncorhynchus kisutch). Pages 395-445 in C. Groot and L. Margolis, editors. Pacific salmon life histories. University of British Columbia Press, University of British Columbia, Vancouver. xv + 564 pp.

Bartley, D. M., and G. A. E. Gall. 1991. Genetic identification of native cutthroat trout (Oncorhyncuhs clarki) and introgressive hybridization with introduced rainbow trout (O. mykiss) in streams associated with the Alvord Basin, Oregon and Nevada. Copei

Emlen, J. T. 1991. Divergence in the foraging responses of birds on two Bahama islands. Ecology 62:289-95.