Berna, H. J. 1991. First record of the ermine (Mustela erminea) in Arizona. Southwest. Nat. 36:245-246.

De Smet, K.D., and M.P. Conrad. 1991. Management and research needs for the Baird's sparrow and other grassland species in Manitoba. Proceedings of the The Second Endangered Species and Prairie Conservation Workshop, Provincial Museum of Alberta. Natural

Henson, P., and T. A. Grant. 1991. The effects of human disturbance on trumpeter swan breeding behavior. Wildl. Soc. Bull. 19:248-257.

Li, P. and T. E. Martin. 1991. Nest-site selection and nesting success of cavity-nesting birds in high elevation forest drainages. Auk 108:405-418.

Peterson, A. T. 1991. Gene flow in scrub jays: frequency and direction of movement. Condor 93:926-934.

Steidl, R. J., C. R. Griffin, and L. J. Niles. 1991a. Differential reproductive success of ospreys in New Jersey. J. Wildl. Manage. 55:266-272.

Christens, E., and H. Blokpoel. 1991. Operational spraying of white mineral oil to prevent hatching of gull eggs. Wildl. Soc. Bull. 19:423-430.

Klenner, W., and C. J. Krebs. 1991. Red squirrel population dynamics. I. The effect of supplemental food on demography. J. Anim. Ecol. 60:961-978.

Nesom, G. L. 1991. A new species of Erigeron (Asteraceae: Astereae) from Northwestern New Mexico. Phytologia. 71(5): 416-419.

Schmutz, J. K., R. W. Fyfe, U. Banasch and H. Armbruster. 1991. Routes and timing of migration of falcons banded in Canada. Wilson Bull. 103:44-58.

Young, B. E. 1991. Annual molts and interruption of the fall migration for molting in Lazuli buntings. Condor 93:236-250.

Rosenberg, K.V., R.D. Ohmart, W.C. Hunter, and B.W. Anderson. 1991. Birds of the Lower Colorado River valley. The University of Arizona Press, Tucson. 416 pp.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #5 on 22 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #2A, 27 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Radio tower plot #12 on 3 May 1991.

Martin, K. 1991. Photographs of an Aplomado Falcon observed near RITA site, WSMR. 4 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.

Minckley, W. L. 1991. Professor of Zoology. Arizona State University, Tempe, AZ.

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

Clayton, P. 1991. Field survey to Ball Ranch - Stop #7 on 22 July 1991.

Bestgen, K. R., and S. P. Platania. 1991. Status and conservation of the Rio Grande silvery minnow, Hybognathus amarus. Southwestern Naturalist 36:225-232.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #22 24 May, 1991.

Clark, D. R., Jr., and C. M. Bunck. 1991. Trends in North American small mammals found in common barn-owl (TYTO ALBA) dietary studies. Can. J. Zool. 69:3093-3102.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Aztec plot #6 on 25 April 1991.

Fleischer, R. C., S. I. Rothstein, and L. S. Miller. 1991. Mitochondrial DNA variation indicates gene flow across a zone of known secondary contact between two subspecies of the brown-headed cowbird. Condor 93:185-189.

Kraus, F., and M. M. Miyamoto. 1991. Rapid cladogenesis among the pecoran ruminants: evidence from mitochondrial DNA sequences. Systematic Zoology 40:117-130.

Mayer, P. M., and M. R. Ryan. 1991a. Survival rates of artificial piping plover nests in American avocet colonies. Condor 93:753-755.

U.S. Geological Survey, National Mapping Division, and EROS Data Center. 1991. Conterminous U.S. AVHRR Companion Disc.

Mapper unknown. 1991. Maps of 8 exclosures of Cirsium vinaceum on LIncoln NF, NM.

Rogers, L. L., G. A. Wilker, and S. S. Scott. 1991. Reactions of black bears to human menstrual odors. J. Wildlife Management 55:632-634.

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.

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.

Hotker, H. (ed.) 1991. Waders Breeding on Wet Grasslands. Wader Study Group Bull. 61, Supplement.

Conley, M. 1991. Letter to Commander, U.S. Army, White Sands Missile Range, att: STEW-EL-N (Ms. Y. Hart), subject: threatened and endangered plant and animal survey at ABC flip side site (WAO 300-07). 20 Feb 1991.

Kirkeminde, M. 1991. Unpub field notes for survey to Mogollon Mts - Little Turkey Creek on 10 June 1991. 1 p + map.

Reynolds, R.T. et al. (1991) Management Recommendations for the Northern Goshawk in the Southwestern United States. Retrieved from Guadalupe Ranger District, Lincoln National Forest, USFS. 204 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 #12 on 23 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #10 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-east fork Kutz Canyon-stop #5 on 22 April 1991.

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

Adams, D. A. and J. S. Hammond. 1991. Changes in forest vegetation, bird, and small mammal populations at Mount Mitchell, North Carolina--1959/62 and 1985. Journal of the Elisha Mitchell Scientific Society 107:3-12.

Castrale, J. S. 1991. Eastern woodland buteos. Pages 50- 9 in Proceedings of Midwest Raptor Management Symposium and Workshop 27 Feb - 1 Mar 1989, Chicago, Illinois. National Wildlife Federation Scientific and Technical Series No. 15.

Dittmann, D. L., and R. M. Zink. 1991. Mitochondrial DNA variation among phalaropes and allies. Auk 108:771-779.

Holway, D. A. 1991. Nest-site selection and the importance of nest concealment in the black-throated blue warbler. Condor 93:575-581.

Lincoln National Forest. 1991. Maps of exclosures to protect Cirsium vinaceum, Lincoln NF, Alamagordo, NM.

Parren, S. G. 1991. Evaluation of nest-box sites selected by eastern bluebirds, tree swallows, and house wrens. Wildl. Soc. Bull. 19:270-277.

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

Schmutz, J.K. 1991b. Age-related differences in reproductive success among Ferruginous and Swainson's hawks in Alberta. Journal of Raptor Research 25:160.

Wayne, R. K., et al. 1991. Conservation genetics of the endangered Isle Royale gray wolf. Conservation Biology 5(1)41-

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.

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.