Lackey, J. A. 1991. Chaetodipus spinatus. Am. Soc. Mamm., Mammalian species No. 385:1-4.

Pianka, E. R. 1991. Phrynosoma platyrhinos. Catalog of American Amphibians and Reptiles 517: 1-4.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #14 on 29 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #37 30 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area- Kutz Canyon, stop #7 on 9 May 1991.

Barker, D.G. 1991. An investigation of the natural history of the New Mexico ridgenose rattlesnake, Crotalus willardi obscurus. 100 p.

Tobalske, B.W., R.C. Shearer, and R.L. Hutto. 1991. Bird populations in logged and unlogged western larch/Douglas-fir forest in northwestern Montana. USDA Forest Service Intermountain Research Station Research Paper INT-422.

Muldavin, E. 1991. Riparian and wetlands survey, Pecos National Historical Park. Natural Heritage New Mexico Publ. No. 91-GTR-26. Natural Heritage New Mexico, Universit of New Mexico, Albuquerque, NM. 31 p.

Clayton, P. 1991. Plant survey for Abronia bigelovii, Astragalus feensis and Pediocactus papyracanthus on the Ball Ranch. Unpubl. report by New Mexico Natural Heritage Program for The Nature Conservancy, NMNHP contract 91-07-10. 10 p.

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

Peckinpaugh, M. 1991. Summary of Least tern observations, summer 1991. Report to Nongame Program, NM Dept. of Game and Fish.

Wood, S. 1991. Argemone pleiacantha ssp pinnatisecta: Alamo Canyon July 1991. . 2 p.

Sirotnak, J. M., K. P. Reese, J. W. Connelly, and K. Radford. 1991. Effects of the Conservation Reserve Program (CRP) on wildlife in southeastern Idaho. Idaho Department of Fish and Game Job Compl. Rep., Proj. W-160-R-18.

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.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #10 on 23 July 1991.

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

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.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #30 29 May, 1991.

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

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.

Abeyta, A. Montoya, J. (1991) Northern Goshawk Nest Search Form - 1991. Questa Ranger District, Carson National Forest, USFS. 5 p.

DeBruin, E. 1991. Status and distribution of Astragalus accumbens in an area of the Zuni Mountains. Unpubl. report by New Mexico Natural Heritage Program for Cibola National Forest. 50 p.

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.

Montoya, A.B. 1991. Aplomado falcon fall monitoring project. New Mexico Cooperative Fish and Wildlife Research Unit, NMSU. 13 November 1991. 23 pp. (including field notes).

Unknown (1991) Written report on and map for Northern Goshawk Sight PFA: 7-1 . Questa Ranger District, Carson National Forest, USFS. 4 p.

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.

DeBruin, E. 1991. Field survey to Mogollon MTS - crest trail 182 on19 July 1992. 1 p.

DeBruin, E. 1991. Field survey to Farmington Resource Area- Aztec ACEC - stop #17 on 25 April 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.

U.S. Fish and Wildlife Service (USFWS). 1991. Utah prairie dog recovery plan. Denver, CO. 41 pp.

Advanced Sciences, Inc. 1991. Threatened and endangered species survey at ATACMS NECI and FIX sites, final report. WSMR Environmental Services report no. EA-006-91, prepared under WSMR contract DAAD07-90-C-0018, Work Assignment Order 300-23. 11 October 19

Gila National Forest. 1991. Mexican Spotted Owl annual monitoring and inventory summary.

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.

Bestgen, Kevin R. and Steven P. Platania. 1991. Status and conservation of the Rio Grande silvery minnow, ^&Hybognathus amarus. Southwest. Nat. 36(2): p225-232.

Diamond, A. W. 1991. Assessment of the risks from tropical deforestation to Canadian songbirds. Transactions of the North American Wildlife and Natural Resources Conference 56:177-194.

Herkert, J.R. 1991a. Prairie birds of Illinois: population response to two centuries of habitat change. Illinois Natural History Survey Bulletin 34:393-399.

Livezey, B. C. 1991. A phylogenetic analysis and classification of recent dabbling ducks (tribe Anatini) based on comparative morphology. Auk 108:471-507.

Peterson, M. J., W. E. Grant, and D. S. Davis. 1991. Bison-brucellosis management: simulation of alternative strategies. J. Wildl. Manage. 55:205-213.

Toland, B. 1991. Successful nesting by reddish egrets at Oslo Island, Indian River County, Florida. Florida Field Naturalist 19:51-53.

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.

Holechek, J.L. 1991. Chihuahuan desert rangeland, livestock grazing, and sustainability. Rangelands. 13(3):115-120.

Randi, E., et al. 1991. Allozyme divergence and phylogenetic relationships within the Strigiformes. Condor 93:295-301.

Stutchbury, B. J. 1991. Coloniality and breeding biology of purple martins (PROGNE SUBIS HESPERIA) in saguaro cacti. Condor 93:666-675.

McEneaney, T. 1991. The uncomon loon. Flagstaff, Northland. 112 pp.

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

Clayton, P. 1991. Field survey to Ball Ranch - Stop #13 on 23 July 1991.