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Unpublished letter to Camino Real District Ranger, Subject: Alamo Dinner Diversity Unit.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.

Davidson, P. W. 1991. East Kootenay bighorn sheep enhancement project: completion report. British Columbia Ministry of Environment. Unpublished Wildlife Branch Report. Cranbrook, BC. 183pp.

Burgner, R. L. 1991. Life history of sockeye salmon (Oncorhynchus nerka). Pages 1-117 in C. Groot and L. Margolis, editors. Pacific salmon life histories. University of British Columbia Press, University of British Columbia, Vancouver. xv + 564 pp.

Forbes, S. H., and F. W. Allendorf. 1991b. Associations between mitochondrial and nuclear genotypes in cutthroat trout hybrid swarms. Evolution 45:1332-1349.

Johnson, N. K., and J. A. Marten. 1991. Evolutionary genetics of flycatchers. III. Variation in EMPIDONAX HAMMONDII (Aves: Typrannidae). Can. J. Zool. 69:232-238.

Murphy, E. C., A. M. Springer, and D. G. Roseneau. 1991. High annual variability in reproductive success of kittiwakes (Rissa tridactyla L.) at a colony in western Alaska. Journal of Animal Ecology 60:515-534.

Sakai, H. F., and B. R. Noon. 1991. Nest-site characteristics of Hammond's and Pacific-slope flycatchers in northwestern California. Condor 93:563-574.

Zink, R. K., and D. L. Dittman. 1991. Evolution of brown towhees: mitochondrial DNA evidence. Condor 93:98-105.

Apa, A. D., D. W. Uresk, and R. L. Linder. 1991. Impacts of black-tailed prairie dog rodenticides on nontarget passerines. Great Basin Nat. 51:301-309.

De Smet, K.D., and M.P. Conrad. 1991. Status, habitat requirements, and adaptations of Ferruginous Hawks in Manitoba. Pages 219-221 in G.L. Holroyd, G. Burns, and H.C. Smith, editors. Proceedings of the second endangered species and prairie conservation w

Hines, T. D., and R. M. Case. 1991. Diet, home range, movements and activity periods of swift fox in Nebraska. Prairie Naturalist 23:131-138.

Procter-Gray, E. 1991. Female-like plumage of subadult male American redstarts does not reduce aggression from other males. The Auk 108:872-9.

Strickland, D. 1991. Juvenile dispersal in gray jays: dominant brood member expels siblings from natal territory. Can. J. Zool. 69:2935-2945.

Goldsmith, F.B. 1991. Monitoring for Conservation and Ecology. Chapman and Hall, New York, New York, USA.

Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes: North America north of Mexico. Houghton Mifflin Company, Boston, Massachusetts. 432 pp.

Stuart, J. N. 1991. Cnemidophorus exsanguis. Cat. Am. Amph. Rept. 516.1-516.4.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #1 22 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Adobe Downs Ranch, stops #12, 13, 14, on 1 May 1991.

Persecetti, C. and J. Horton. 1991. USGS Capitan Peak 7.5' topo map with Astragalus kerrii from 23-31 May 1991 field survey to Capitan Mts for TNC.

Barker, D.G. 1991. An investigation of the natural history of the New Mexico ridgenose rattlesnake, Crotalus willardi obscurus. 100 p.

Flanagan, P. (1991) 1991 Mexican Spotted Owl Inventory Form. Questa Ranger District, Carson National Forest, USFS. 41 p.

Muldavin, E. 1991. Riparian and wetlands survey, Pecos National Historical Park. Natural Heritage New Mexico Publ. No. 91-GTR-26. Natural Heritage New Mexico, Universit of New Mexico, Albuquerque, NM. 31 p.

Locklear, J.H. 1991. The status of Asclepias uncialis green in eastern Co and NE New Mexico. Unpubl report to the Co Field Office of TNC. 55 p + photos + maps.

Sanchez, B. (1991) Formal Spotted Owl Monitoring, Management Territoty 0602007. Silver City Ranger District, Gila National Forest, USFS. 7 p.

DeBruin, E. 1991. Special plant survey form, New Mexico for Draba standleyi.

American Ornithologists' Union (AOU) . 1991. Thirty-eighth Supplement to the American Ornithologists' Union Check-list of North American Birds. Auk 108:750-754.