Thies, M. and W. Caire. 1991. Nearest neighbor analysis of the spatial distribution of houses of Neotoma micropus in southwestern Oklahoma. Southwest. Nat. 36(2): 233-237.

Mills, Scott G. 1991. Miscellaneous notes on Coryphantha scheer 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.

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea, and W.B. Scott. 1991. Common and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication 20. 183 pp.

Black, C. and J. Black. 1991. Gray Ranch breeding bird surveys June, August, November 1991. Unpubl. field notes for survey done for NMNHP.

Harper, Hooley, Valdez, Franklin, Martinez. 1991. 1991 Mexican Spotted Owl Inventory Form, El Rito Ranger District, Carson National Forest, USFS. 3p.

New York Department of Environmental Conservation. 1991. Status of beaver management in New York. Draft report.

Unknown, 1991. Spotted Owl Narrative Report, Carson National Forest, USFS. 5 p.

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 #40 30 May, 1991.

Mehlhop, P. and R. Smartt. 1991. Field trip to the Dona Ana Mountains, 12 September.

Baker, M. C., and E. M. Baker. 1991. Reproductive behavior of female buntings: isolating mechanisms in a hybridizing pair of species. Evolution 44:332-338.

Frawley, B.J., and L.B. Best. 1991. Effects of mowing on breeding bird abundance and species composition in alfalfa fields. Wildlife Society Bulletin 19:135-142.

Johnson, G. D., and M. S. Boyce. 1991. Survival, growth, and reproduction of captive-reared sage grouse. Wildl. Soc. Bull. 19:88-93.

Propst, D. Bestgen, K. 1991. Habitat and Biology of the Loach Minnow, Tiaroga cobitis, in New Mexico. Copeia, 1991(1) pp. 29-38. American Society of Ichythyologists and Herpetrologists. USFS

Shackford, J.S. 1991. Breeding ecology of the Mountain Plover in Oklahoma. Bull. Okla. Ornithol. Soc. 24:9-13.

Zwickel, F. C., et al. 1991. Sexual and subspecific variation in the number of rectrices of blue grouse. Can. J. Zool. 69:134-140.

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.

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.

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.

S91SPELCNMUS, Legacy reference. Physical copy not yet located.

Graham, T. E. 1991. Pseudemys rubriventris. Cat. Am. Amph. Rept. 510.1-510.4.

Ownbey, G. B., and T. Morley. 1991. Vascular plants of Minnesota: A checklist and atlas. University of Minnesota Press, Minneapolis.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #17 on 2 Aug 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #31 29 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Blanco stop #5 on 8 May 1991.

Sherry, T. W., and R. T. Holmes. 1991. Population age structure of long-distance migratory passerine birds: variation in time and space. Acta XX Congressus Internationalis Ornithologici.

Burns, B. (1991) 1991 Meican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 20 p.

Human Systems Research, Inc. 1991. Mountains of sunlit silence: White Sands Missile Range inventory sample survey of the southern San Andres Mountains, New Mexico.

Painter, C.W. 1991. Results of the 1990 survey for the Gray-checkered whiptail (Cnemidophorus dixoni) on Bureau of Land Management (BLM) lands in southwestern New Mexico. 20 p.

Taiz, J.D. Reichenbacher, F.W. (1991) 1991 Inventory of Mexican Spotted Owl (Strix occidentalis lucida Nelson) in the Gila Natioanl Foret, Wilderness District. 33 p.

Rinne, J. L. and W. L. Minckley. 1991. Native fishes of arid lands: A dwindling resource of the desert southwest. U.S. Department of Agriculture, Forest Service, General Technical Report RM-206. Rocky Mountain Forest and Range Experiment Station, Fort Col

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.

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

Glahn, J. F., et al. 1991. Impact of roost control on local urban and agricultural blackbird problems. Wildl. Soc. Bull. 19:511-522.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #26 24 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Tucker Canyon plot #10 on 1 May 1991.

Hill, N. P. and J. M. Hagan, III. 1991. Population trends of some northeastern North American landbirds: a half century of data. Wilson Bulletin 103:165-182.

Nordyke, K. A., and S. W. Buskirk. 1991. Southern red-backed vole, CLETHRIONOMYS GAPPERI, populations in relation to stand succession and old-growth character in the central Rocky Mountains. Can. Field-Nat. 105:330-334.

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

Snell, R. R. 1991b. Variably plumaged Icelandic herring gulls reflect founders not hybrids. Auk 108:329-341.

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

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.

Toone, R. A. 1991. Speyeria nokomis nokomis: Great Basin Silverspot Butterfly. Pages 21-24 in Literature Review for Special Status Invertebratess Existing on or near lands administered by the U.S.D.I. Bureau of Land Management in Utah. Utah Natural Herita

Sheppard, J. L. pers. comm. Colorado Department of Natural Resources, Division of Wildlife, 6060 Broadway, Denver, CO 80216.

Unknown, 1991. Fish Collection Records: Costilla and Ponil Creeks, New Mexico Department of Game and Fish, "Fish Data Base."