Confer, J.L., K. Knapp, D. Coker, M. Armstrong, and J. Doherty. 1991. The rapidly changing distribution of the Golden-winged Warber (VERMIVORA CHRYSOPTERA) in central New York. Kingbird 41:5-10.

Grzybowski, J. A. 1991. A closer look: the black-capped vireo. Birding, August 1991, pp. 216-219.

Keast, A., and S. Saunders. 1991. Ecomorphology of the North American ruby-crowned (REGULUS CALENDULA) and golden-crowned (R. SATRAPA) kinglets. Auk 108:880-888.

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

Scott, A. C., and M. Bekoff. 1991. Breeding behavior of evening grosbeaks. Condor 93:71-81.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #42, 27 May, 1991.

Reed, S. 1991. Field survey to Capitan Mtd. - Raton Spring 31 May 1991.

Bjorklund, M. 1991. Evolution, phylogeny, sexual dimorphism and mating system in the grackles (QUISCALUS spp.: Icterinae). Evolution 45:608-621.

Conover, M. R. 1991. Herbivory by Canada geese: diet selction and effect on lawns. Ecological Applications 1(2):231-236.

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.

Holmes, A.M., R.R. Tasker, Q. F. Hess, A.J. Hanks, 1991. The Ontario Butterfly Atlas. Toronto Entomologists Association, 167 pp.

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

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #1 22 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Adobe Downs Ranch, stops #12, 13, 14, on 1 May 1991.

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

Gila National Forest. 1991. Mexican Spotted Owl inventory forms.

Meints, D.R. 1991. Seasonal movements, habitat use and productivity of Columbian sharp-tailed grouse in southeastern Idaho. M.S. thesis, University of Idaho. 74 pp.

Skaggs, R.W. 1991. A spotted owl inventory in the Organ mountains of south-central New Mexico 1991. Unpubl. report to New Mexico Natural Heritage Program, contract #NMHP 91-06-11.

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.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #8 on 22 July 1991.

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.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #6 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #19 on 7 May 1991.

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.

Robbins, S. D., Jr. 1991. Wisconsin birdlife: population and distribution past and present. University of Wisconsin Press, Madison.

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

Reed, S. 1991. Field survey to Capitan Mts.- Two Arroyos W. of Pierce Canyon, 31 May 1991.

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

Britton, B. 1991. Unpublished plant occurrence record for Allium gooddingii at Gooseberry Canyon, Sept. 1988. map.

Kirkeminde, M. 1991. Unpub field notes for survey to Mogollon Mts - Hall Canyon on 31 July 1991. 1 p + map.

Skaggs, K. 1991. Plant/animal occurrence record - cooperator forms for Perityle cernua and Coryphantha organensis.

Anderson, D.L. 1991-1995. Range activities log book. WSMR Environmental Services.

Gorresen, M. Schwarz, H.R. (1991) Northern Goshawk Inventory Form - 1991. Sandia Ranger District, Cibola National Forest, USFS. 4 p.

Malville, L. et al. 1991. Summary report of surveys for Mexican spotted owls (Strix occidentalis lucida) conducted in the San Juan resource area of the Bureau of Land Management in southwestern Colorado

Sivinski, R., and K. Lightfoot. 1991. NM rare plant occurrence record data sheet of 18 June 1991 for Erigeron acomanus. EMNRD, Santa Fe, NM.

Gibbs, J. P., J. R. Longcore, D. G. McAuley, and J. K. Ringelman. 1991. Use of wetland habitats by selected nongame waterbirds in Maine. Fish and Wildlife Reservation 9, Fish and Wildlife Service.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #12 on 23 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Armenta Canyon, stop #4 on 7 May 1991.

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

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.

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

New Mexico Natural Heritage Program. 1991. Field map for 1991 Gilia formosa survey on USGS 7 1/2' topo map, east fork Kutz Canyon Quad.

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.

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

Fauna West Wildlife Consultants. 1991. A bibliography of literature and papers pertaining to swift and kit foxes. Montana Department of Fish, Wildlife and Parks.

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

Lincoln National Forest, Mayhill Ranger District. 1991. Echinocereus fendleri var kuenzleri monitoring report. May, 1991.

Skaggs, K.E. 1991. Distribution and habitat of Oenothera organensis and Perityle cernua, endemics of the Organ Mountains, New Mexico. 5p.+ attachments.

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

Anonymous. 1991. Diversity and dwarf mistletoe. BioScience 41:755.

Cummings, J. L., et al. 1991. Evaluation of dimethyl and methyl anthranilate as a Canada goose repellent on grass. Wildl. Soc. Bull. 19:184-190.

Haas, G. R., and J. D. McPhail. 1991. Systematics and distribution of the Dolly Varden (Salvelinus malma) and bull trout (Salvelinus confluentus) in North America. Canadian Journal of Fisheries and Aquatic Sciences 48:2191-2211.

Kirkpatrick, J. F., and J. W. Turner, Jr. 1991. Compensatory reproduction in feral horses. J. Wildl. Manage. 55:649-652.

Ortega, J. C. 1991. The annual cycles of activity and weight of rock squirrels (Spermophilus variegatus) in southeastern Arizona. Am. Midl. Nat. 126:159-171.