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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

Pylypec, B. 1991. Impacts of fire on bird populations in a fescue prairie. Can. Field-Nat. 105:346-349.

Wilson, B. S. 1991b. Latitudinal variation in activity season mortality rates of the lizard Uta stansburiana. Ecolog. Monogr. 61:393-414.

Paul, R. T. 1991. Status Report -- EGRETTA RUFESCENS (GMELIN) Reddish Egret. U. S. Fish and Wildlife Service, Houston, Texas.

Aguilera, E., R. L. Knight, and J. L. Cummings. 1991. An evaluation of two hazing methods for urban Canada geese. Wildl. Soc. Bull. 19:32-35.

Cully, J.F. JR. 1991. Response of raptors to reduction of a Gunnison's prairie dog population by plague.. American Midland Naturalist. 125:140-149.

Grimm, M. 1991. Northeast Wisconsin Yellow Rail survey. Passenger Pigeon 53(2):115-121.

Lehman, N., et al. 1991. Introgression of coyote mitochondrial DNA into sympatric North American gray wolf populations. Evolution 45:104-119.

Pfennig, D. W., A. Mabry, and D. Orange. 1991. Environmental causes of correlations between age and size at metamorphosis in Scaphiopus multiplicatus. Ecology 72:2240-2248.

Stern, M. A., and R. L. Jarvis. 1991. Sexual dimorphism and assortative mating in black terns. Wilson Bull. 103(2): 266-271.

Conant, R. and J. T. Collins. 1991. A field guide to reptiles and amphibians: eastern and central North America. Third edition. Houghton Mifflin Co., Boston, Massachusetts. 450 pp.

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

Schmidly, D. J. 1991. The bats of Texas. Texas A & M University Press, College Station, Texas. 188 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Unpublished letter to Camino Real District Ranger, Subject: Alamo Dinner Diversity Unit.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.

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

Hayssen, V. 1991. Dipodomys microps. Am. Soc. Mamm., Mammalian Species No. 389:1-9.

Heusmann, H. W. 1991. The history and status of the mallard in the Atlantic Flyway. Wildl. Soc. Bull. 19:14-22.

S91SIVSBNMUS, Legacy reference. Physical copy not yet located.

Morrell, T. E., R. H. Yahner, and W. L. Harkness. 1991. Factors affecting detection of great horned owls by using broadcast vocalizations. Wildl. Soc. Bull. 19:481-488.

Shriner, W. M., and P. B. Stacey. 1991. Spatial relationships and dispersal patterns in the rock squirrel, SPERMOPHILUS VARIEGATUS. J. Mamm. 72:601-606.

Advanced Sciences, Inc. 1991. Final report: threatened and endangered species survey of areas to be affected by relocation of the Woodbridge EMP Simulator Facilities to WSMR. WSMR Environmental Services. 23 December 1991. . 33 p.

Harper, J. 1991. Mexican Spotted Owl Annual Report- FY 91. Jicarilla Ranger District, Carson National Forest, USFS. 4 p.

Poague, L. 1991. Monitoring Report for Hedghog Cactus. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.16.

Worthington, R.D. 1991. Rare plant survey of the Limestone Hills east of nations east well and west of Hueco Tanks State Historical Park, Fort Bliss Military Reservation, El Paso County, Texas. Unpubl. report by New Mexico Natural Heritage Program for Ft.

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.

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.

U.S. Fish and Wildlife Service (USFWS). 1991. Endangered and threatened wildlife and plants; animal candidate review for listing as endangered or threatened species. Proposed Rule. Federal Register. 56(225):58804-36.

Lincoln National Forest. 1991. Mexican Spotted Owl inventory forms.

Sivinski, R. 1991. NM rare plant occurrence record data sheet of 1 May 1991 for Phacelia splendens. EMNRD, Santa Fe, NM.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #20 24 May, 1991

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

Muldavin, E. 1991. White Sands Missile Range Vegetation Communities Survey.

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.

Dunmire, W.W. 1991. T & E and sensitive plant survey: San Pedro ACEC, Socorro Resource Area, Bureau of Land Management. Unpublished report for BLM by TNC. 11 p + maps + photos.

Hoeh, W.R. 1991. The evolution and consequences of simultaneous hermaphroditism in the freshwater mussel genus Utterbackia (Bivalvia: Unionidae). Ph.D. Dissertation, Biology, University of Michigan, Ann Arbor, Michigan. 97 pp.

Sivinski, R. 1991. Annual Section 6 performance report monitoring endangered plants (job 1). Unpublished report for U.S. Fish and Wildlife Service, Albuquerque, NM. 135 p + maps.

Buehler, D. A., et al. 1991d. Nonbreeding bald eagle communal and solitary roosting behavior and roost habitat on the northern Chesapeake Bay. J. Wildlife Management 55:273-281.

Ewert, D. N., and R. A. Askins. 1991. Flocking behavior of migratory warblers in winter in the Virgin Islands. Condor 93:864-868.

Jacobson, E. R., et. al. 1991. Chronic upper respiratory disease of free-ranging desert tortoises (Xerobates agassizii) in Las Vegas Valley, Nevada. Journal of Wildlife diseases. 27(2):296-316.

Morales, J. C., S. W. Balllinger, J. W. Bickham, I. F. Greenbaum, and D. A. Schlitter. 1991. Genetic relationships among eight species of Eptesicus and Pipistrellus (Chiroptera: Vespertilionidae). Journal of Mammalogy 72:286-291.

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.