DeBruin, E. 1991. Gilia formosa inventory and monitoring project. Unpubl. report by New Mexico Natural Heritage Program for BLM Farmington Resource Area. 8 p. + app.

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

Todsen, T.K. 1991. Unpubl. plant occurrence record for Malaxis tenuis, map and letter, 17 May 1991.

Gonzalez, M., S. Gonzalez, and Y. Herrera. 1991. Listados floristicos de Mexico. IX. Flora de Durango. Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Mexico, D.F. 167 pp.

Burns, B. (1991) 1991 Mexican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 30 p.

Jennings, R. 1991. Alamosa Warm Springs-microhabitats. Unpub. Rana chiricahuensis data from Randy Jennings. Biology Dept. UNM.

Quesenberry, L. 1991. Unpub. printout of Bureau Land Mgt. T & E plant database for Gilia formosa 2 Jan. 1991. 2 pp.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #4 on 22 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #4 on 24 April 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #3 on 22 May 1991 - Mammillaria heyderi.

DeBruin, E. 1991. Field survey to Tularosa Mts - Long canyon on 23 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #21 on 8 May 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Kitten Canyon stop #9 on 5 May 1991.

Burger, J., and M. Gochfeld. 1991. Reproductive vulnerability: parental attendance around hatching in roseate (STERNA DOUGALLII) and common (S. HIRUNDO) terns. Condor 93:125-129.

DeBlieu, J. 1991. Remodeling the condor. New York Times Magazine, 18 November 1991.

Gibbs, J. P. 1991. Spatial relationships between nesting colonies and foraging areas of great blue herons. Auk 108:764-770.

Manning, R. W. and J. R. Goetze. 1991. First record of the elf owl (MICRATHENE WHITNEYI WHITNEYI) east of the Pecos River, Texas. Texas Journal of Science 43:103-104.

Falvey, B. 1991. Gilia formosa sites on Horn Canyon Quad. BLM, Farmington, NM.

Nichols, J. D. 1991. Science, population ecology, and the management of the American black duck. J. Wildl. Manage. 55:790-799.

Allen, D. H. 1991. An insert technique for constructing artificial red-cockaded woodpecker cavities. General Technical Report SE-73. U.S. Department of Agriculture, Southeastern Forest Experimental Station, Asheville, North Carolina.

Sauer, J. R., and J. B. Bortner. 1991. Population trends from the American woodcock singing-ground survey, 1970-1988. J. Wildl. Manage. 55:300-312.

Thompson, C.W. 1991d. The sequence of molts and plumages in painted buntings and implications for theories of delayed plumage maturation. Condor 93:209-235.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Gila National Forest. 1991. Goshawk data base update.

Marsh, P.C. 1991. Spikedace Meda fulgida recovery plan. Unpub report for U.S. Fish and Wildlife Dept, Albuquerque, NM 37 pp.

Unknown. (1991) Intensive Water Quality Survey of Tributaries to the Red River: Cabresto, Columbine, Pioneer, Mellette and Goose Creeks in Taos County, New Mexico, April 1-4, 1991. Carson Supervisor's Office, Carson National Forest, USFS.

Belant, J. L., and J. F. Olson. 1991. Chick fostering by common loons, GAVIA IMMER. Can. Field-Nat. 105:406-407.

Dessauer, H. C., and C. J. Cole. 1991. Genetics of whiptail lizards (Reptilia: Teiidae: Cnemidophorus) in a hybrid zone in southwestern New Mexico. Copeia 1991:622-637.

Hellgren, E. C., M. R. Vaughan, and D. F. Stauffer. 1991. Macrohabitat use by black bears in a southeastern wetland. J. Wildlife Management 55:442-448.

Lehmkuhl, J.F., L.F. Ruggiero, and P.A. Hall. 1991. Landscape-scale patterns of forest fragmentation and wildlife richness and abundance in the southern Washington Cascade Range. Pages 425-442 in L.F. Ruggiero, K.B. Aubry, A.B. Carey and M.H. Huff, techni

Peterson, A. T. 1991. Geographic variation in the ontogeny of beak coloration of gray-breasted jays (APHELOCOMA ULTRAMARINA). Condor 93:448-452.

Snell, R. R. 1991a. Interspecific allozyme differentiation among North Atlantic white-headed larid gulls. Auk 108:319-328.

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.

Mayden, R. L., W. J. Rainboth, and D. G. Buth. 1991. Phylogenetic systematics of the cyprinid genera Mylopharodon and Ptychocheilus: comparative morphometry. Copeia 1991:819-834.

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

Reed, S. and P. Hyder 1991. USGS Arabela 7.5' topo map with Astragalus kerrii from 23-31 May 1991 field survey for TNC.

Rogers, M. A. 1991a. Evolutionary differentiation within the northern Great Basin pocket gopher, Thomomys townsendii. I. Morphological variation. Great Basin Nat. 51:109-126.

Abeyta, A. (1991) Witten Notes on Cabresto Site Goshawk Nest. Questa Ranger District, Carson National Forest, USFS. 1 p.

DeBruin, E. 1991. Sensitive plants of the Gila National Forest. Unpubl. report by New Mexico Natural Heritage Program for the Sensitive Species Workshop, April 29-30, 1991.