U.S. Forest Service (USFS). 1991. Forest and rangeland birds of the United States: Natural history and habitat use. U.S. Department of Agriculture, Forest Service Agricultural Handbook 688. 625 pp.

Ernst, C. H., and J. F. McBreen. 1991c. Terrapene. Cat. Am. Amph. Rept. 511.1-511.6.

DeBruin, E. 1991. Field survey to Gila National Forest, Grouse Mountain - Stop #1 on 20 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #16 on 4 May 1991.

Muldavin, E. 1991. Gray Ranch vegetation survey, 1991. New Mexico Natural Heritage Program

Bureau of Land Management. 1991. Maps of USGS 7.5' top maps with transparencies showing Gilia formosa: existing pops, areas surveyed and potential distribution. Prepared from Paul Knight's 1986 field work maps.

Dunmire, W.W. 1991. T + E and sensitive plant survey Sawtooth ACEC Socorro Resource Area BLM. Unpublished report by TNC, NM Field Office. 9 p + maps.

Joyner-Griffith, M. A. 1991. Neonatal desert tortoise (GOPHERUS AGASSIZII) biology: analyses of morphology, evaporative water loss and nautral egg production followed by neonatal emergence in the central Mojave Desert. California State University, Domingu

Powell, A. N. 1991. Monitoring black tern populations in Minnesota in association with the USFWS Waterfowl Production Survey. unpublished report to Minnesota Department of Natural Resources Nongame Program.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #20 on 5 Aug 1991.

Blackwell, B. H., et al. 1991. Radio harness system for bobcat kittens. Great Basin Nat. 51:343-347.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #32 29 May, 1991.

Mehlhop, P. 1991. Field survey to Faywood Cienega on 28 April 1991.

Gall, L.F. 1991b. Evolutionary ecology of sympatric Catocala moths (Lepidoptera: Noctuidae). II. Sampling for wild larvae on their foodplants. Journal of Research on the Lepidoptera. 29(3):195-216.

Hands, H.M., M.R. Ryan and J.W. Smith. 1991. Migrant shorebird use of marsh, moist-soil, and flooded agricultural habitats. Wildl. Soc. Bull. 19:457- 464.

Montopoli, G. J., and D. A. Anderson. 1991. A logistic model for the cumulative effects of human intervention on bald eagle habitat. J. Wildlife Management 55:290-293.

Schweitzer, Dale F. 1991. The hickory feeding Catocala (Lepidoptera:Noctuidae) fauna in the absence of Carya ovata in southern New Jersey. Ent. News 102(4):165-172.

Anderson, J. Hall, D. (1991) 1991 Mexican Spotted Owl Dayime Follow-up Visit Form. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Frybarger, S. (1991) 1991 Mexican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 36 p.

Orr, M.V. 1991. Threatened, endangered and sensitive plants, observation record for Pediocactus papyracanthus.

Unknown (1991) Multiple Bundled Mexican Spotted Owl Territory Data Sheets and Related Documents. Lincoln Supervisor's Office, Lincoln National Foresy, USFS. 519 p.

Sutherland, J. M. 1991. Effects of drought on American coot, FULICA AMERICANA, reproduction in Saskatchewan parklands. Canadian Field-Naturalist 105:267-273.

Lufkin, A., editor. 1991. California's salmon and steelhead, the struggle to restore an imperiled resource. University of California Press, Berkeley. 305 pp.

DeBruin, E. 1991. Astragalus kerrii questionable locality. Notes from personal communication from Ellen DeBruin to Robin Fisher on 12 Aug 1991. 1 pp.

Kirkeminde, M. 1991. Unpub field notes for survey to Mogollon Mts - Willow Creek on 11 Oct 1991. 1 p + map.

Sanchez, B. (1991) Collected 1991 Mexican Spotted Owl Daytime Follow-up Visit Forms. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 126 p.

DeBruin, E. 1991. Field survey to Mogollon Mts - Willow Creek on 17 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #18 24 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Radio tower plot #11 on 3 May 1991.

Mehlhop, P. 1991. Field survey of August 26,1991 to Salt Creek, White Sands Missile Range.

DeBruin, E. Oct 1991. Special plant survey form, NM for Coryphantha organensis in the Organ Mts.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #27 24 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource area-plot #24 on 9 May 1991.

Mehlhop, P. 1991. Field survey of August 26,1991 to Mound Spring, White Sands MIssile Range.

Anthony, R. M., P. L. Flint, and J. S. Sedinger. 1991. Arctic fox removal improves nest success of black brant. Wildl. Soc. Bull. 19:176-184.

Engeman, R. M., D. L. Campbell, and J. Evans. 1991. An evaluation of two activity indicators for use in mountain beaver burrow systems. Wildl. Soc. Bull. 19:413-416.

Ingold, D.J. 1991. Nest-site fidelity in Red-headed and Red-bellied Woodpeckers. Wilson Bulletin 103(1):118.

Phillips, R. L., J. L. Cummings, and J. D. Berry. 1991. Responses of breeding golden eagles to relocation. Wildl. Soc. Bull. 19:430-434.

Seidel, M. E., and W. M. Palmer. 1991. Morphological variation in turtles of the genus Pseudemys (Testudines: Emydidae) from central Atlantic drainages. Brimleyana 17:105-135.

Wilson, U. W. 1991e. Responses of three seabird species to El Nino events and other warm water episodes on the Washington coast, 1979-1990. Condor 93:853-858.

Burns, B. FRybarder, S. (1991) 1991 Mexican Spotted Owl Inventory Form. Retreived from Silver City Ranger District, Gila National Forest, USFS. 28 p.

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

Hagerdon, M. 1991. Threatened, endangered and sensitive plants observation record for Lilium philadelphicum. US Forest Service

Harris, D. 1991. 1990 Mexican Spotted Owl Inventory Form, El Rito Ranger District, Carosn National Forest. 3p.

Schwarz, H.R. (1991) Gray Vireo Observations in the Sandia Mountains of Central New Mexico. Retrieved from Guadalupe Ranger District, Lincoln National Forest, USFS. 7 p.

Buehler, D. A., et al. 1991c. Survival rates and population dynamics of bald eagles on Chesapeake Bay. J. Wildlife Management 55:608-613.

Ellis, D. H., C. H. Ellis, and D. P. Mindell. 1991. Raptor responses to low-level jet aircraft and sonic booms. Env. Poll. 74:53-83.

Hunter, J. E. 1991. Grazing and pocket gopher abundance in a California annual grassland. Southwest. Nat. 36:17-18.

Minckley, W. L., G. K. Meffe, and D. L. Soltz. 1991a. Conservation and management of short-lived fishes: the cyprinodontoids. Pages 247-82 in W. L. Minckley and J. E. Deacon (editors). Battle Against Extinction: Native Fish Management in the American West

Pogson, T. H., and S. M. Lindstedt. 1991. Distribution and abundance of large sandhill cranes, GRUS CANADENSIS, wintering in California's Central Valley. Condor 93:266-278.

Wilkinson, J. A., et al. 1991. Distribution and genetic variation in venom A and B populations of the Mojave rattlesnake (Crotalus scutulatus scutulatus) in Arizona. Herpetologica 47:54-68.

Lehmkuhl, J. F. and L. F. Ruggiero. 1991. Forest fragmentation in the Pacific Northwest and its potential effects on wildlife. Pages 35-46 in L. F. Ruggiero, K. B. Aubry, A. B. Carey and M. H. Huff, tech. coordinators. Wildlife and Vegetation of unmanaged

Cronin, M. A., M. E. Nelson, and D. F. Pac. 1991. Spatial heterogeneity of mitochondrial DNA and allozymes among populations of white-tailed deer and mule deer. J. Heredity 82:118-127.

Gore, J. A., and M. J. Kinnison. 1991. Hatching success in roof and ground colonies of least terns. Condor 93:759-762.

Leberg, P. L. 1991. Influence of fragmentation and bottlenecks on genetic divergence of wild turkey populations. Conservation Biology 5(4):522-530.

Petersen, K. L., and L. B. Best. 1991. Nest-site selection by sage thrashers in southeastern Idaho. Great Basin Nat. 51:261-266.

Steidl, R. J., et al. 1991c. Reproductive success and eggshell thinning of a reestablished peregrine falcon population. J. Wildlife Management 55:294-299.

Clark, J. D., and K. G. Smith, editors. 1991. Proceedings of the eastern workshop on black bear research and management. Univ. Arkansas. 150 pp.

van Rhijn, J. G. 1991. The ruff. Academic Press, San Diego, California. xii + 209 pp.

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