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 #9 on 22 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Kutz Canyon - Stop #19 on 9 May 1991.

Reed, S. and P. Hyder 1991. USGS Capitan Peak 7.5' topo map with Mammillaria heyderi, Epithelantha micromeris and Astragalus kerrii from 23-31 May 1991 field survey for TNC.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Flora Vista, stop #3 on 23 April 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area- Aztec- stop #11 on 22 April 1991.

Brennan, L. A. 1991. How can we reverse the northern bobwhite population decline? Wildl. Soc. Bull. 19:544-555.

Dawson, J. W., and R. W. Mannan. 1991a. Dominance hierarchies and helper contributions in Harris' hawks. Auk 108:649-660.

Laycock, W.A. 1991. Stable states and thresholds of range condition on North American rangelands: a viewpoint. Journal of Range Management. 44(5):427-433.

Nesom, G. L. 1991. A new species of Erigeron (Asteraceae: Asterae) from Northwestern New Mexico. Phytologia 71(5): 416-419.

Rogers, M. A. 1991b. Evolutionary differentiation within the northern Great Basin pocket gopher, Thomomys townsendii. II. Genetic variation and biogeographic considerations. Great Basin Nat. 51:127-152.

Taylor, W. K., and M. A. Kershner. 1991. Breeding biology of the great crested flycatcher in central Florida. J. Field Ornithol. 62:28-39.

Anderson, D.L. 1991. Plant collection log sheet for ^&Astralagus castetteri - log #19: west slopes of Goat Mt. 30 May 1991.

Ferguson, D. 1991. Unpub notes from phone conversation with Ellen DeBruin 12 April 1991.

Lincoln National Forest. 1991. Mexican Spotted Owl daytime follow-up visit form, survey for Mexican Spotted Owl.

Santa Fe National Forest. 1991. Mexican Spotted Owl daytime follow-up visit form, survey for Mexican Spotted Owl.

American Ornithologists' Union (AOU). 1991. Thirty-eighth supplement to the American Ornithologists' Union Check-list of North American birds. Auk 108:750-4.

Deacon, J. E., and C. D. Williams. 1991. Ash Meadows and the legacy of the Devils Hole pupfish. Pages 69-87 in W. L. Minckley and J. E. Deacon, eds. Battle against extinction: native fish management in the American West. University of Arizona Press, Tucso

Hammerson, G. A., and H. M. Smith. 1991. The correct spelling of the name of the short-horned lizard of North America. Bull. Maryland Herp. Soc. 27(3):121-127.

Klenner, W. 1991. Red squirrel population dynamics. II. Settlement patterns and response to removals. J. Anim. Ecol. 60:979-993.

Pashley, D. 1991. Shorebirds, gulls, and terns: Louisiana, Mississippi, Alabama. Pages 79-83. in Proceed. of the Coastal Nongame Workshop. Dawn Jenings (ed.) U.S. Fish and Wildl. Serv., Region 4, and Florida Game Fresh Water Fish Commission. Gainsville, F

Siegel-Causey, D., C. Lefevre, and A. B. Savinetskii. 1991. Historical diversity of cormorants and shags from Amchitka Island, Alaska. Condor 93:840-852.

Garrott, R. A., D. B. Siniff, and L. L. Eberhardt. 1991b. Growth rates of feral horse populations. J. Wildl. Manage. 55:641-648.

Jhala, Y. V., and R. H. Giles, Jr. 1991. The status and conservation of the wolf in Gujarat and Rajasthan, India. Conservation Biology 5(4):476-483.

Mitchell, J. C. 1991. Amphibians and reptiles. Pages 411-76 in K. Terwilliger (coordinator). Virginia's Endangered Species: Proceedings of a Symposium. McDonald and Woodward Publishing Company, Blacksburg, Virginia.

Ridgway, M. S., B. J. Shuter, and E. E. Post. 1991b. The relative influence of body size and territorial behaviour on nesting asynchrony in male smallmouth bass, Micropterus dolomieui (Pisces: Centrarchidae). Journal of Animal Ecology 60:665-681.

Van Sickle, W. D., and F. G. Lindzey. 1991. Evaluation of a cougar population estimator based on probability sampling. J. Wildl. Manage. 55:738-743.

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 #14 on 29 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #37 30 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area- Kutz Canyon, stop #7 on 9 May 1991.

Tobalske, B.W., R.C. Shearer, and R.L. Hutto. 1991. Bird populations in logged and unlogged western larch/Douglas-fir forest in northwestern Montana. USDA Forest Service Intermountain Research Station Research Paper INT-422.

Advanced Sciences, Inc. 1991. Threatened and endangered species survey for road grades and site preparation at Multiple Launch Rocket System (MLRS)/Multi-mode Automatic Tracking System (MATS) at White Sands Missile Range, final report. Report no. REC-0199

Hakkila, M. 1991. Unpub letter to Pat Mehlhop on Rana spp. Localities dated 3 Dec 1991. 1 p + 2 maps.

New Mexico Dept of Game and Fish. 1991. New Mexico fish specimen database. Unpub printout from NM Dept Game and Fish database on specimens of Gila nigrescens at various museums. 2 pp.

Smartt, R. 1991. Species report on snails from New Mexico in UTEP museum specimen holdings. Unpublished listing of snail specimens at UTEP. 14 pp.

Sirotnak, J. M., K. P. Reese, J. W. Connelly, and K. Radford. 1991. Effects of the Conservation Reserve Program (CRP) on wildlife in southeastern Idaho. Idaho Department of Fish and Game Job Compl. Rep., Proj. W-160-R-18.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #1 on 18 July 1991.

Aguero, D. A., R. J. Johnson, and K. M. Eskridge. 1991. Monofilament lines repel house sparrows from feeding sites. Wildl. Soc. Bull. 19:416-422.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #7 23 May, 1991.

Buhlmann, K. A., and M. R. Vaughan. 1991. Ecology of the turtle Pseudemys concinna in the New River, West Virginia. Journal of Herpetology 25:72-78.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #25 on 9 May 1991.

Dunbar, D. L., et al. 1991. Status of the spotted owl, STRIX OCCIDENTALIS, and barred owl, STRIX VARIA, in southwestern British Columbia. Canadian Field-Naturalist 106:464-468.

Smith, D.G. 1991. Keys to the Freshwater Macroinvertebrates of Massachusetts. D.G. Smith, Amherst, Massachusetts. 236 pp.

Kingsley, N.P., and T.H. Nicholls. 1991. Raptor habitat in the midwest. Pages 185-194 in Proc. midwest raptor management symposium and workshop. National Wildlife Federation, Washington, DC.

Marsh, P.C., M.E. Douglas, W.L. Minckley and R. Timmons. 1991. Rediscovery of Colorado squawfish, Ptychocheilus lucius (Cyprinidae), in Wyoming. Copeia 1991:1091-1092.

Propst, D. L., and K. R. Bestgen. 1991. Habitat and biology of the loach minnow, Tiaroga cobitis, in New Mexico. Copeia 1991:29-38.

Cadman, M. D. 1991. Updated status report on the Loggerhead Shrike (eastern population) LANIUS LUDOVICIANUS MIGRANS, in Canada. Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 26 pp.

Mahrt, M. and J.R. Bacon. 1991. Inventory of listed species joint task force six operations Luna, Dona Ana, and Hidalgo counties, New Mexico. Unpub. report for U.S. Army Corp of Engineers, Albuquerque district and Joint Task Force Six, Fort Bliss, TX.

Southwestern Field Biologists. 1991. August 12, 1991 inventory of Mexican Spotted Owl ( Strix occidentalis lucida Nelson) in the Gila NF, Wilderness District.

Youngman, P. M., and F. W. Schueler. 1991. Martes nobilis is a synonym of Martes americana, not an extinct Pleistocene-Holocene species. J. Mamm. 72:567-577.

Cockrum, E. L., and Y. Petryszyn. 1991. The long-nosed bat, Leptonycteris: an endangered species in the southwest? Occas. Pap. Mus. Texas Tech Univ. (142):1-32.

Black, C. 1991. Bird observations on the Gray Ranch, Hidalgo Co., New Mexico. Compiled for the Nature Conservancy. 10 p.

Hevron, B. Oct 1 1991. Results of survey for: Erigeron acomanus, Proatriplex pleiantha and monitoring study of Astragalus humillimus on the Navajo Nation. Unpublished report for EMNRD by Navajo Natural Heritage Program.

Paton, P. W. C., and T. C. Edwards, Jr. 1991. Nesting ecology of the snowy plover at Great Salt Lake, Utah--1991 breeding season. Progress Report, Contract No. 90-2028, Utah Cooperative Fish and Wildlife Research Unit, Utah State University, Logan. 28 pp.

Weizling, R. 1991. Known site monitoring form for Ipomopsis sancti-spiritus. 6 p.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #11 on 23 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Kutz Canyon-stop #6A on 24 April 1991.

Black, C. and J. Black. 1991. Field survey to Gray Ranch - Animas Peak NE - site #1 on 23 June 1991.