Morkill, A. E., and S. H. Anderson. 1991. Effectiveness of marking powerlines to reduce sandhill crane collisions. Wildlife Society Bull. 19:442-449.

Steidl, R. J., C. R. Griffin, and L. J. Niles. 1991b. Contaminant levels of osprey eggs and prey reflect regional differences in reproductive success. J. Wildl. Manage. 55:601-608.

Kartesz, J. T. 1991. Synonym names from 1991 checklist, as extracted by Larry Morse, TNC, June 1991.

Sivinski, R. 1991. New Mexico rare plant occurrence record data sheet for Mammillaria viridiflora. NM Forestry Division, Santa Fe, NM. July 8, 1991.

Alberico, J. A. R., J. M. Reed, and L. W. Oring. 1991. Nesting near a common tern colony increases and decreases spotted sandpiper nest predation. Auk 108:904-910.

Phillips, A.M., and B.G. Phillips. 1991. Status report for Puccinellia parishii. U.S. Fish and Wildlife Service, Ecological Services, Phoenix, AZ.

Byrd, M. A., and D. W. Johnston. 1991. Birds. Pages 477-537 in K. Terwilliger, coordinator. Virginia's endangered species: proceedings of a symposium. McDonald and Woodward Publ. Co., Blacksburg, Virginia.

Gibbs, J.P., W.G. Shriver, and S.M. Melvin. 1991. Spring and summer records of the Yellow Rail in Maine. Journal of Field Ornithology 62(4):509-516.

Jung, R. E. 1991. Effects of human activities and lake characteristics on the behavior and breeding success of common loons. Passenger Pigeon 53(3):207-218.

Oldham, J. C., and H. M. Smith. 1991. The generic status of the smooth green snake, Opheodrys vernalis. Bull. Maryland Herp. Soc. 27(4):201-215.

Schroeder, M. A. 1991. Movement and lek visitation by female greater prairie-chickens in relation to predictions of Bradbury's female preference hypothesis of lek evolution. Auk 108:896-903.

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.

Mayer, J. J. 1991. Wild pigs in the United States, their history, comparative morphology, and current status. Univ. Georgia Press. 336 pp.

Schwartz, A., and R. W. Henderson. 1991. Amphibians and Reptiles of the West Indies: Descriptions, Distributions, and Natural History. University of Florida Press, Gainesville, Florida. xvi + 720 pp.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #16 24 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-roadside pipeline site-stop #17 on 9 May 1991.

Giesen, K. M. 1991. Population inventory and habitat use by Lesser Prairie-Chickens in southeast Colorado. Federal Aid in Wildlife Restoration Report W-152-R, Colorado Division of Wildlife.

Altenbach, J. Scott. 1991. Untitled letter about "Lava Cave." Department of Biology, University of New Mexico. October 1991. 2 pp.

Mehlhop, P., et al. 1991. Status and distribution of Erigeron rhizomatus (Zuni Fleabane) within a designated satellite image reflectance value in the Datil and Sawtooth Mts. Unpubl. report by New Mexico Natural Heritage Program for Cibola National Forest.

Sivinski, R. 1991. Letter to Douglas F. Irving of Chapman, Wood, and Griswold, Inc. Concerning proposed mining impact on Townsendia gypsophila occurring in Sec. 16, T15NR1E.

Bazata, K. 1991. Nebraska stream classification study. Lincoln, Nebraska Department of Environmental Quality.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #16 on 30 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #2 23 May, 1991.

Burger, J., and M. Gochfeld. 1991. The common tern: its breeding biology and social behavior. Columbia Univ. Press, New York. 413 pp.

Brigham, R. M. 1991. Flexibility in foraging and roosting behaviour by the big brown bat (Eptesicus fuscus). Can. J. Zool. 69:117-121.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #2 on 22 April 1991.

Davis, J., R. H. MacDonald, and M. W. Sherman. 1991. Old-growth mixed coniferous-red fir forest transition. Journal of Field Ornithology (Supplement) 62:49-50.

Peterjohn, B.G., and D.L. Rice. 1991. Ohio breeding bird atlas. Ohio Department of Natural Resources, Division of Natural Areas and Preserves, Columbus, Ohio. 416 pp.

Mehlhop, P. 1991. Land snail field survey in New Mexico to Organ Mts, Soledad and North Canyons, Sept 9, 1991.

Iverson, J. B. 1991a. Life history and demography of the yellow mud turtle, Kinosternon flavescens. Herpetologica 47:373-395.

Loft, E. R., J. W. Menke, and J. G. Kie. 1991. Habitat shifts by mule deer: the influence of cattle grazing. J. Wildl. Manage. 55:16-26.

Pagels, J. F., M. L. Fies and R. Glascow. 1991. Appalachian water shrew, Sorex palustris punctulatus Hooper: recovery plan. Virginia Dept. of Game and Inland Fisheries. Richmond, VA.

Petit, L. J. 1991. Adaptive tolerance of cowbird parasitism by Prothonotary Warblers: a consequence of nest-site limitation? Animal Behavior 41:425-32.

Bravo-Hollis, H. y H. Sanchez-Mejorada. 1991. Las Cactaceas de MUniversidad Nacional Autonoma de MMVol. II Y III.

Kartesz, J. T. 1991. Accepted taxon names from 1991 checklist, as extracted by Larry Morse, TNC, June 1991.

Sivinski, R. 1991. Status report on Sophora gypsophila var. guadalupensis. NM Dept. of Energy, Minerals, and Natural Resources, Forestry Division.

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

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

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Halterman, M. D. 1991. Distribution and habitat use of the yellow-billed cuckoo (Coccyzus americanus occidentalis) on the Sacramento River, California, 1987-1990. Masters thesis, California State University, Chico.

McCracken, J. D. 1991. Status report on the Louisiana waterthrush SEIURUS MOTACILLA in Canada. Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 22 pp.

Stumpff, B. 1991. Memorandum, Department of Game and Fish. Subject: Fish Migration Barrier Surveys. USFS.

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

Clayton, P. 1991. Field survey to Ball Ranch - Stop #3 on 19 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #15 on 4 May 1991.

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

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.

ECoPlan Inc. 1991? An analysis of wetlands and endangered plant species along the Chama River: and their responses to fluctuating water levels. Part of study of Chama Wild and Scenic River w/ USFS and other agencies.

Kirkeminde, M. 1991. Letter regarding recent visits to existing Allium gooddingii locations in the Gila National Forest dated 2 Jan 1992. 3 pp.