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.

Wershler, C., W.W. Smith, and C. Wallis. 1991. Status of the Baird's Sparrow in Alberta: 1987/1988 update with notes on other grassland sparrows and Sprague's Pipit. Pages 87-89 in G.L. Holroyd, G. Burns, and H.C. Smith, editors. Proceedings of the second

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.

Terres, J.K. 1991. The Audubon Society encyclopedia of North American birds. Alfred A. Knopf, New York.

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

Kartesz, J. 1991. [Synonymized checklist of the vascular flora of North America north of Mexico, Hawaii, and the U.S. Caribbean islands]. Advance copy [in database form] of manuscript submitted for publication to Timber Press, Portland, Oregon.

Quesenberry, L. 1991. Unpub. printout of Bureau Land Mgt. database of Gilia formosa on disturbed site and well locations moved due to G. formosa. 4 pp.

Nowak, R. M. 1999. Walker's mammals of the world. Sixth edition. Johns Hopkins University Press, Baltimore. Two volumes, 1,936 pp.

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

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #11 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area- Hampton Arroyo ACEC stop #23 on 6 May 1991.

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

DeBruin, E. 1991. Field Survey to Fort Stanton ACEC - "Dan's plot", 27 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area-Munoz Canyon stop #1 on 8 May 1991.

Reed, S. 1991. Field survey to Capitan Mts. - Baca Spring Creek, 31 May 1991.

Blake, J.G. 1991. Nested subsets and the distribution of birds on isolated woodlots. Conservation Biology 5:58-66.

Conover, M. R., and G. S. Kania. 1991. Characteristics of feeding sites used by urban-suburban flocks of Canada geese in Connecticut. Wildl. Soc. Bull. 19:36-38.

Krementz, D. G., et al. 1991. Historical changes in laying date, clutch size, and nest success of American black ducks. J. Wildl. Manage. 55:462-466.

Morton, M.L. 1991. Postfledging dispersal of green-tailed towhees to a subalpine meadow. Condor 93:466-468.

Tango, P. J., E. D. Michael, and J. I. Cromer. 1991. Mating and first-season births in interstate transplanted river otters, LUTRA CANADENSIS (Carnivora: Mustelidae). Brimleyana 17:53-55.

Burns, B. (1991) 1991 Mexican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 24 p.

Gutierrez, R.J. (1991) Demography of Two Mexican Spotted Owl (Strix occidentalis lucda) Populations in Arizona and New Mexico; Preliminary Results, 1991, Bundled with Supporting Documentation. Retrieved from Silver City Ranger District, Gila National Fore

Hansen, P., K. Boggs, and R. Pfister. 1991. Classification and management of riparian and wetland sites in Montana. Unpublished draft version prepared for Montana Riparian Association, Montana Forest and Conservation Experiment Station, School of Forestry

Sanchez, B. (1991) Formal Spotted Owl Monitoring, Management Territory 0602005. Silver City Ranger District, Gila National Forest, USFS. 11 p.

Texas Parks and Wildlife Dept., Resource Protection Division. 1991. Endangered resources annual status report. Texas Parks and Wildlife Department, Austin, TX, 45 pp + appendices.

Buehler, D. A., et al. 1991e. Winter microclimate of bald eagle roosts on the northern Chesapeake Bay. Auk 108:612-618.

Doncaster, C. P., and D. W. MacDonald. 1991. Drifting territoriality in the red fox Vulpes vulpes. J. Anim. Ecol. 60:423-439.

Hoffman, R. W. 1991. Spring movements, roosting activities, and home-range characteristics of male Merriam's wild turkey. Southwest. Nat. 36:332-337.

Mah, J., and G. L. Nuechterlein. 1991. Feeding behavior of red-winged blackbirds on bird-resistant sunflowers. Wildl. Soc. Bull. 19:39-46.

Platania, S. P., K. R. Bestgen, M. A. Moretti, D. L. Propst, and J. E. Brooks. 1991. Status of Colorado squawfish and razorback sucker in the San Juan River, Colorado, New Mexico, and Utah. Southwestern Naturalist 36:147-150.

Wiedenfeld, D. A. 1991. Geographical morphology of male yellow warblers. Condor 93:712-723.

Greaves, J. M. and M. V. Gray. 1991. The Least Bell's Vireo population in the Gibraltar Reservoir area during 1991. Final report to Los Padres National Forest, Goleta, CA.

Budeau, D. A., J. T. Ratti, and C. R. Ely. 1991. Energy dynamics, foraging ecology, and behavior of prenesting greater white-fronted geese. J. Wildl. Manage. 55:556-563.

Gall, L.F. 1991a. Evolutionary ecology of sympatric Catocala moths (Lepidoptera: Noctuidae). I. Experiments on larval foodplant specificity. Journal of Research on the Lepidoptera. 29(3): 173-194.

Hull, C.N. 1991. Northern Waterthrush. Page 436 IN R. Brewer, G.A. McPeek, R.J. Adams, Jr. (editors), The atlas of breeding birds of Michigan. Michigan State University Press, East Lansing.

Lovich, J. E., et al. 1991. Relationships among turtles of the genus Clemmys (Reptilia, Testudines, Emydidae) as suggested by plastron scute morphology. Zoologica Scripta 20:425-429.

Thompson, C.W. 1991a. Is the painted bunting actually two species? Problems determining species limits between allopatric populations. Condor 93:987-1000.

Robbins, S. D., Jr. 1991. Wisconsin Birdlife: Population and Distribution Past and Present. University of Wisconsin Press, Madison, Wisconsin.

Ashton, R. E., Jr., and P. S. Ashton. 1991. Handbook of reptiles and amphibians of Florida. Part two. Lizards, turtles & crocodilians. Revised second edition. Windward Pub., Inc., Miami. 191 pp.

Spahr, R., L. Armstrong, D. Atwood, and M. Rath. 1991. Threatened, endangered, and sensitive species of the Intermountain Region. U.S. Forest Service, Ogden, Utah.

Sheldon, J. W. 1991. Wild dogs: the natural history of the nondomestic Canidae. Academic Press. 248 pp.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #5 on 22 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #2A, 27 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Radio tower plot #12 on 3 May 1991.

Martin, K. 1991. Photographs of an Aplomado Falcon observed near RITA site, WSMR. 4 p.

Dunmire, W. 1991. Observation of T&E plants form for Eustoma exaltum, BLM. 5 records-1 pg ea.

Kartesz, J.T. 1991. Accepted taxonomic names from November 1991 checklist, as extracted by Ken Wright, The Nature Conservancy, December 1992-January 1993.

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

Bryan, G.G., and L.B. Best. 1991. Bird abundance and species richness in grassed waterways in Iowa rowcrop fields. American Midland Naturalist 126:90-102.

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

DeGraaf, R. M., W. M. Healy, and R. T. Brooks. 1991. Effects of thinning and deer browsing on breeding birds in New England oak woodlands. Forest Ecology Management 41:179-191.

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

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

Janvrin, J. A., E. P. Wiggers, and T. V. Dailey. 1991. Evaluation of drive counts for estimating northern bobwhite densities. Wildl. Soc. Bull. 19:XXX-481.

Lundquist, R. W. and J. M. Mariani. 1991. Nesting habitat and abundance of snag-dependent birds in the southern Washington Cascade Range. Pp. 220-239 in L. F. Ruggiero, K. B. Aubry, A. B. Carey and M. H. Huff, tech. coordinators. Wildlife and Vegetation o

Postupalsky, S. 1991. Northern goshawk. Pages 169 in R. Brewer, G. A. McPeek, R. J. Adams Jr. (editors). Atlas of Breeding Birds of Michigan. Michigan State University Press, East Lansing, Michigan.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 4 p.

Harmata, A. R. 1991. Impacts of oil and gas development on raptors associated with Kevin Rim, Montana. Unpubl. Rep. Kevin Rim Raptor Study Group, Biology Department, Montana State University, Bozeman. Prepared for the USDI Bur. Land Manage., Great Falls R