Dunmire, W. W. 1991. Survey of Elk Mountain for Erigeron subglaber and other sites of biological importance, Santa Fe National Forest. 14 p.

Kennedy, P.L. 1991. Inventory of five proposed timber sales on the Santa Fe N.F., N.M. for Northern Goshawk nest sites during the 1991 nesting season. Oct. 15, 1991.

Romero, B. Romero, A. Simons, T. Garcia, A. 1991. Astragalus ripleyi survey form for new population. Canjilon Ranger District, Carson National Forest, USFS.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #3A on 21 May 1991.

Block, S. B., and E. G. Zimmerman. 1991. Allozymic variation and systematics of plains pocket gophers (Geomys) of south-central Texas. The Southwestern Naturalist 36:29-36.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #35 29 May, 1991.

Gilbert, F.F., and R. Allwine. 1991. Spring bird communities in the Oregon Cascade Range. Pages 145-158 in L.F. Ruggiero, K.B. Aubry, A.B. Carey, and M.H. Huff, technical coordinators. Wildlife and Vegetation of unmanaged Douglas-fir Forests. USDA Forest

Galati, R. 1991. Golden-crowned kinglets: treetop nesters of the north woods. Iowa State Univ. Press. 142 pp.

Hepp, G. R., and J. E. Hines. 1991. Factors affecting winter distribution and migration distance of wood ducks from southern breeding populations. Condor 93:884-891.

S91SIVLCNMUS, Legacy reference. Physical copy not yet located.

Morimoto, D. C., and F. E. Wasserman. 1991. Dispersion patterns and habitat associations of rufous-sided towhees, common yellowthroats, and prairie warblers in the southeastern Massachusetts pine barrens. Auk 108:264-276.

Seutin, G. 1991. Morphometric identification of Traill's flycatchers: an assessment of Stein's formula. Journal of Field Ornithology 62:308-313.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 20 p.

Hartman, G. Harris, G. Yates, T. 1991. Levels of Hybridization Between Rainbow and Cutthroat Trout in New Mexico Streams, Museum of Southwsatern Biology, Department of Biology, University of New Mexico, Albuquerque, NM 87131.

Wootten, T.H. 1991. Unpub. letter to Ellen DeBruin on 11 April 1991 re: Scrophularia macrantha. 1 pp.

Taylor, I. R. 1991. Effects of nest inspections and radiotagging on barn owl breeding success. J. Wildl. Manage. 55:312-315.

Minckley, W. L., and J. E. Deacon. 1991. Battle Against Extinction: Native Fish Management in the American West. University of Arizona Press, Tucson. xviii + 517 pp.

U.S. Fish and Wildlife Service (USFWS). 1991. Endangered and threatened wildlife and plants; animal notice of review. Federal Register 56(225):58804-58836. 50 CFR (17).

Dunmire, B. 1991. NMNHP element occurrence record filled out by B. Dunmire, NM TNC Field Office.

Lincoln National Forest. 1991. Northern Goshawk Field Forms & Maps.

Sisneros, J. et al (1991) Northern Goshawk Inventory Form - 1991. Tres Piedras Ranger District, Carson National Forest, USFS. 63 p.

DeBruin, E. et. al. 1991 Field survey to Lincoln NF - Matney Spring, 27 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #19, 25 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area - Kitten Canyon stop #14 on 10 May 1991.

Mongold, R. 1991. Field survey to Capitan Mts - Pancho Canyon & Torrez Canyon, 31 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #39 30 May, 1991.

Mehlhop, P. 1991. Davies Tank field map. Sept 11, 1991.

Armitage, K. B. 1991. Social and population dynamics of yellow-bellied marmots: results from long-term research. Annual Rev. Ecol. Syst. 22:379-407.

Forbes, S. H., and F. W. Allendorf. 1991a. Mitochondrial genotypes have no detectable effects on meristic traits in cutthroat trout hybrid swarms. Evolution 45:1350-1359.

Iverson, J. B. 1991b. Phylogenetic hypotheses for the evolution of modern kinosternine turtles. Herpetological Monographs 5:1-27.

Powell, A. N. 1991. Great Lakes piping plovers: recovery or extirpation? Endangered Species Update 8(9-10):1-4.

Shaffer, H. B., J. M. Clark, and F. Kraus. 1991. When molecules and morphology clash: a phylogenetic analysis of the North American ambystomatid salamanders (Caudata: Ambystomatidae). Systematic Zoology 40:284-303.

Zink, R. M., W. L. Rootes, and D. L. Dittman. 1991c. Mitochondrial DNA variation, population structure, and evolution of the common grackle (QUISCALUS QUISCALA). Condor 93:318-329.

Clayton, P. 1991. An assessment of the biological values of the Ball Ranch, New Mexico. Unpubl. report by New Mexico Natural Heritage Program for The Nature Conservancy, New Mexico Field Office, Santa Fe, NM. 7 p. + app.

Coody, C. J. 1991. An improved census technique of the northern bobwhite (COLINUS VIRGINIANUS) using recorded calls of the female. M. S. thesis, Univ. of Arkansas. 46 pp. [Issued also as Arkansas Cooperative Fish and Wildlife Research Unit Publication No.

Haug, E. A., and A. B. Didiuk. 1991. Updated status report on the burrowing owl ATHENE CUNICULARIA HYUGAEA in Canada. Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 29 pp.

Silver, R.D. et al (1991) Unpublished letter to Manuel Lujan, Secretary of the Interior, Northern Goshawk listing petition. Retrieved from Regional Office. 58 p.

Buehler, D. A., et al. 1991b. Effects of human activity on bald eagle distribution on the northern Chesapeake Bay. J. Wildlife Management 55:282-290.

Evens, J. G., et al. 1991. Distribution, relative abundance and status of the California black rail in western North America. Condor 93:952-966.

Iverson, G. C., and M. R. Fuller. 1991. Area-occupied survey technique for nesting woodland raptors. Pages 118-124 in Proceedings of Midwest Raptor Management Symposium and Workshop 27 Feb - 1 Mar 1989, Chicago, Illinois. National Wildlife Federation Scie

Minckley, W. L., P. C. Marsh, J. E. Brooks, J. E. Johnson and B. L. Jensen. 1991b. Management toward recovery of the razorback sucker. Pages 303-357 in W. L. Minckley and J. E. Deacon, editors. Battle against extinction: native fish management in the Amer

Rieseberg, L.H. 1991. Hybridization in rare plants: insights from case studies in CERCOCARPUS and HELIANTHUS. In Falk, D.E. and K.E. Holsinger, eds. Genetics and conservation of rare plants. Oxford University Press.

Zink, R. M., D. L. Dittman, and W. L. Rootes. 1991b. Mitochondrial DNA variation and the phylogeny of ZONOTRICHIA. Auk 108:578-584.

Angradi, T. R., J. S. Spaulding, and E. D. Koch. 1991. Diel food utilization by the Virgin River spinedace, Lepidomeda mollispinis mollispinis, and speckled dace, Rhinichthys osculus, in Beaver Dam Wash, Utah. Southwestern Naturalist 36:158-70.

DeGeus, D. W. 1991. Brown-headed cowbirds parasitize loggerhead shrikes: first records for family Laniidae. Wilson Bulletin 101(3):504-6.

Handley, C. O., Jr. 1991. Mammals. Pages 539-616 in K. Terwilliger, coordinator. Virginia's endangered species: proceedings of a symposium. McDonald and Woodward Publishing Company, Blacksburg, Virginia.

Stinson, D. W., M. W. Ritter, and J. D. Reichel. 1991. The Mariana common moorhen: decline of an island endemic. Condor 93:38-43.

Gleason, H.A., and A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. New York Botanical Garden, Bronx, New York. 910 pp.

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

Sheldon, J. W. 1991. Wild dogs: the natural history of the nondomestic Canidae. Academic Press. 248 pp.

DeBruin, E. 1991 Field survey to Lincoln NF - Capitan Peak Trailhead, 20 May 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Flora Vista, stop #6 on 2 May 1991.

New Mexico Natural Heritage Program. 1991. Field map for 1991 Gilia formosa survey on USGS 7 1/2' topo map, Blanco Quad.

Figg, D. E. 1991. Missouri Department of Conservation Annual Nongame and Endangered Species Report July 1990 - June 1991. ii + 35 pp.

Knapp, M. 1991.Unpublished letter to Camino Real District Ranger, Subject: Alamo Dinner Diversity Unit. USFS.

Sanchez, B. (1991) Formal Spotted Owl Monitoring, Management Territory 0602003, Summar of 1991 Monitoring. Silver City Ranger District, Gila National Forest, USFS. 5 p.

DeBruin, E. 1991. Field survey to Lincoln NF - Nogal Tank. 27 May 1991.

Allen, H. 1991. The great blue heron. NorthWord Press, Inc. 175 pp.

Bollinger, E.K. 1991. Conservation of grassland birds in agricultural areas. Pages 279-287 in D.J. Decker, M.E. Krasny, G.R. Goff, C.R. Smith, and D.W. Gross, editors. Challenges in the conservation of biological resources. Westview Press, Boulder, CO.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #38 30 May, 1991.