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

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. Sept 1991. Field survey to the Organ Mts, Autumn 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Horn Canyon, stop #5 on 3 May 1991.

Thuma, D. 1991. Mexican chickadee and yellow-eyed junco survey in the Animas Mts. Survey of Indian Creek conducted 29 Dec 1991.

New Mexico Natural Heritage Program. 1991. Field map for 1991 Gilia formosa survey on USGS 7 1/2' topo map, Huerfanito Peak.

Dunmire, W. W. 1991. Survey of Elk Mountain for Erigeron subglaber and other sites of biological importance, Santa Fe National Forest. 14 p.

Kennedy, P.L. 1991. Inventory of five proposed timber sales on the Santa Fe N.F., N.M. for Northern Goshawk nest sites during the 1991 nesting season. Oct. 15, 1991.

Romero, B. Romero, A. Simons, T. Garcia, A. 1991. Astragalus ripleyi survey form for new population. Canjilon Ranger District, Carson National Forest, USFS.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #3A on 21 May 1991.

Block, S. B., and E. G. Zimmerman. 1991. Allozymic variation and systematics of plains pocket gophers (Geomys) of south-central Texas. The Southwestern Naturalist 36:29-36.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #35 29 May, 1991.

Gilbert, F.F., and R. Allwine. 1991. Spring bird communities in the Oregon Cascade Range. Pages 145-158 in L.F. Ruggiero, K.B. Aubry, A.B. Carey, and M.H. Huff, technical coordinators. Wildlife and Vegetation of unmanaged Douglas-fir Forests. USDA Forest

Galati, R. 1991. Golden-crowned kinglets: treetop nesters of the north woods. Iowa State Univ. Press. 142 pp.

Hepp, G. R., and J. E. Hines. 1991. Factors affecting winter distribution and migration distance of wood ducks from southern breeding populations. Condor 93:884-891.

S91SIVLCNMUS, Legacy reference. Physical copy not yet located.

Morimoto, D. C., and F. E. Wasserman. 1991. Dispersion patterns and habitat associations of rufous-sided towhees, common yellowthroats, and prairie warblers in the southeastern Massachusetts pine barrens. Auk 108:264-276.

Seutin, G. 1991. Morphometric identification of Traill's flycatchers: an assessment of Stein's formula. Journal of Field Ornithology 62:308-313.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 20 p.

Hartman, G. Harris, G. Yates, T. 1991. Levels of Hybridization Between Rainbow and Cutthroat Trout in New Mexico Streams, Museum of Southwsatern Biology, Department of Biology, University of New Mexico, Albuquerque, NM 87131.

Wootten, T.H. 1991. Unpub. letter to Ellen DeBruin on 11 April 1991 re: Scrophularia macrantha. 1 pp.

Taylor, I. R. 1991. Effects of nest inspections and radiotagging on barn owl breeding success. J. Wildl. Manage. 55:312-315.

Minckley, W. L., and J. E. Deacon. 1991. Battle Against Extinction: Native Fish Management in the American West. University of Arizona Press, Tucson. xviii + 517 pp.

U.S. Fish and Wildlife Service (USFWS). 1991. Endangered and threatened wildlife and plants; animal notice of review. Federal Register 56(225):58804-58836. 50 CFR (17).

Dunmire, B. 1991. NMNHP element occurrence record filled out by B. Dunmire, NM TNC Field Office.

Lincoln National Forest. 1991. Northern Goshawk Field Forms & Maps.

Sisneros, J. et al (1991) Northern Goshawk Inventory Form - 1991. Tres Piedras Ranger District, Carson National Forest, USFS. 63 p.

DeBruin, E. et. al. 1991 Field survey to Lincoln NF - Matney Spring, 27 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #19, 25 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area - Kitten Canyon stop #14 on 10 May 1991.