Gavin, T. A., R. A. Howard, and B. May. 1991. Allozyme variation among breeding populations of red-winged blackbirds: the California conundrum. Auk 108:602-611.

Koprowski, J. L. 1991. Response of fox squirrels and gray squirrels to a late spring-early summer food shortage. Journal of Mammalogy 72:367-72.

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.

Bickle, C. A., J. F. Kirkpatrick, and J. W. Turner, Jr. 1991. Contraception in striped skunks with Norplant implants. Wildl. Soc. Bull. 19:334-338.

U.S. Fish and Wildlife Service (USFWS). 1991. Request for information on the Arctic and American peregrine falcons. Federal Register 56(113):26969-26971.

Huff, M.H., and C.M. Raley. 1991. Regional patterns of diurnal breeding bird communities in Oregon and Washington. Pages 176-205 in L.F. Ruggiero, K.B. Aubry, A.B. Carey, and M.H. Huff, technical coordinators. Wildlife and Vegetation of unmanaged Douglas-

Li, Y., and J. R. Gold. 1991. Cytogenetic studies in North American minnows (Cyprinidae): XXII. Chromosomal nucleolar organizer regions in the genus Pimephales. Canadian Journal of Zoology 69:2826-2830.

Reeder, J.R. 1991. A new species of Panicum (Gramineae from Arizona. Phytologia 71(4): 300-303.

Szymczak, M. R., and E. A. Rexstad. 1991. Harvest distribution and survival of a gadwall population. J. Wildl. Manage. 55:592-600.

Johnsgard, P. A. 1991. Crane music: a natural history of American cranes. Smithsonian Inst. Press, Washington, D.C. 136 pp.

Rosenberg, K. V., R. D. Ohmart, W. C. Hunter, and B. W. Anderson. 1991. Birds of the Lower Colorado Valley. The University of Arizona Press, Tuscon. 416pp.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #14 24 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #22 on 8 May 1991.

Dana, R. P. 1991. Conservation management of the prairie skippers H. DACOTAE and H. OTTOE. Station Bulletin 594-1991. Minnesota Agricultural Experiment Station. Univ. of Minnesota, St. Paul, MN. 63 pp.

Galeano-Popp, R.. 1991. Letter to Greg Rawlings, NM Hwy Dept, from Renee Galeano-Popp, USFS, regarding potential impacts to Argemone pleiacantha spp. pinnatisecta, Dec. 1991. . 3 p.

Madrid, B. Ford-Schmid, R. Arvidson, C. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Silver City Ranger District, Gila National Forest, USFS. 3 p.

Sivinski, R. and M.J. Ford. 1991. NM rare plant occurrence record data sheet of 21 July 1991 for Lilium philadelphicum var ondinum. EMNRD, Santa Fe, NM.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #19 on 5 Aug 1991.

DeBruin, E. 1991- 1992. Personal field notebook with information that complements special plant site survey forms for New Mexico.

Birkhead, T. R. 1991. The ecology and behavior of black-billed and yellow-billed magpies. Academic Press. 259 pp.

Brennan, L. A., and M. L. Morrison. 1991. Long-term trends of chickadee populations in western North America. Condor 93:130-137.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Adobe Downs Ranch, stop #15 on 10 May 1991.

Cronin, M. A., S. C. Amstrup, G. W. Garner, and E. R. Vyse 1991. Interspecific and intraspecific mitochondrial DNA variation in North American bears (Ursus). Canadian Journal of Zoology 69(12):2985-2992.

Nowak, R. M. 1991. Walker's mammals of the world. Fifth edition. Vols. I and II. Johns Hopkins Univ. Press, Baltimore. 1629 pp.

Hussell, D. J. T. 1991b. Spring migrations of alder and willow flycatchers in southern Ontario. Journal of Field Ornithology 62(1):69-77.

Novak, J. M., et al. 1991. Catch-effort estimation of white-tailed deer population size. J. Wildl. Manage. 55:31-38.

Crocoll, S. 1991. The potential impact of gypsy moth defoliation on broad-winged hawk reproductive success. The Kingbird 41:224-227.

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.