Warham, J. 1991 (also listed as 1990). The petrels: their ecology and breeding systems. Academic Press. viii + 440 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.

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.

Worthington, R.D. (1991) Final Report, Kuenzler's Hedgehod Cactus Survey's 1, 2 & 3. Guadalupe Ranger District, Lincoln National Forest, USFS. 25 p.

The Nautre Conservancy. 1991. Ball Ranch field map. USGS 7.5' topographic May - San Felipe Pueblo NE - 3510643.

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

New Mexico Natural Heritage Program. 1991. Field map for 1991 Gilia formosa survey on USGS 7.5' topo map, Cedar Hill.

DeBow, M.J. 1991. Letter to Jennifer Fowler-Propst of US Fish and Wildlife Service concerning discovery of two Pediocactus papracanthus. 16 Oct 1991.

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

Mills, Scott G. 1991. Miscellaneous notes on Coryphantha scheeri robustrispina. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.30.

The Nature Conservancy. Dec 9 1991. Addendum: Site Prospectus: Natural Land Protection Act, site identification program, presented to Natural Lands Protection Committee.

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.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form and Maps. Sandia Ranger District, Cibola National Forest, USFS. 40 p.

Harper, Hooley, Franklin, Martinez, Valdez. 1991. 1991 Mexican Spotted Owl Daytime Follow-up Visit Form, El Rito District, Carson National Forest, USFS. 3 p.

Turner, R., et al. 1991. NM Rare plant occurrence record data sheet of 27 August 1991 for Hedeoma apiculatum. EMNRD, Santa Fe, NM.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #4 on 22 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #4 on 24 April 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #40 30 May, 1991.

Mehlhop, P. and R. Smartt. 1991. Field trip to the Dona Ana Mountains, 12 September.

Baker, M. C., and E. M. Baker. 1991. Reproductive behavior of female buntings: isolating mechanisms in a hybridizing pair of species. Evolution 44:332-338.

Frawley, B.J., and L.B. Best. 1991. Effects of mowing on breeding bird abundance and species composition in alfalfa fields. Wildlife Society Bulletin 19:135-142.

Johnson, G. D., and M. S. Boyce. 1991. Survival, growth, and reproduction of captive-reared sage grouse. Wildl. Soc. Bull. 19:88-93.

Propst, D. Bestgen, K. 1991. Habitat and Biology of the Loach Minnow, Tiaroga cobitis, in New Mexico. Copeia, 1991(1) pp. 29-38. American Society of Ichythyologists and Herpetrologists. USFS

Shackford, J.S. 1991. Breeding ecology of the Mountain Plover in Oklahoma. Bull. Okla. Ornithol. Soc. 24:9-13.

Zwickel, F. C., et al. 1991. Sexual and subspecific variation in the number of rectrices of blue grouse. Can. J. Zool. 69:134-140.

Allen, D. H. 1991. An insert technique for constructing artificial red-cockaded woodpecker cavities. General Technical Report SE-73. U.S. Department of Agriculture, Southeastern Forest Experimental Station, Asheville, North Carolina.

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

Gila National Forest. 1991. Goshawk data base update.

Marsh, P.C. 1991. Spikedace Meda fulgida recovery plan. Unpub report for U.S. Fish and Wildlife Dept, Albuquerque, NM 37 pp.

Unknown. (1991) Intensive Water Quality Survey of Tributaries to the Red River: Cabresto, Columbine, Pioneer, Mellette and Goose Creeks in Taos County, New Mexico, April 1-4, 1991. Carson Supervisor's Office, Carson National Forest, USFS.

Belant, J. L., and J. F. Olson. 1991. Chick fostering by common loons, GAVIA IMMER. Can. Field-Nat. 105:406-407.

Dessauer, H. C., and C. J. Cole. 1991. Genetics of whiptail lizards (Reptilia: Teiidae: Cnemidophorus) in a hybrid zone in southwestern New Mexico. Copeia 1991:622-637.

Hellgren, E. C., M. R. Vaughan, and D. F. Stauffer. 1991. Macrohabitat use by black bears in a southeastern wetland. J. Wildlife Management 55:442-448.

Lehmkuhl, J.F., L.F. Ruggiero, and P.A. Hall. 1991. Landscape-scale patterns of forest fragmentation and wildlife richness and abundance in the southern Washington Cascade Range. Pages 425-442 in L.F. Ruggiero, K.B. Aubry, A.B. Carey and M.H. Huff, techni

Peterson, A. T. 1991. Geographic variation in the ontogeny of beak coloration of gray-breasted jays (APHELOCOMA ULTRAMARINA). Condor 93:448-452.

Snell, R. R. 1991a. Interspecific allozyme differentiation among North Atlantic white-headed larid gulls. Auk 108:319-328.

Angradi, T. R., J. S. Spaulding, and E. D. Koch. 1991. Diel food utilization by the Virgin River spinedace, Lepidomeda mollispinis mollispinis, and speckled dace, Rhinichthys osculus, in Beaver Dam Wash, Utah. Southwestern Naturalist 36:158-70.

DeGeus, D. W. 1991. Brown-headed cowbirds parasitize loggerhead shrikes: first records for family Laniidae. Wilson Bulletin 101(3):504-6.

Handley, C. O., Jr. 1991. Mammals. Pages 539-616 in K. Terwilliger, coordinator. Virginia's endangered species: proceedings of a symposium. McDonald and Woodward Publishing Company, Blacksburg, Virginia.

Stinson, D. W., M. W. Ritter, and J. D. Reichel. 1991. The Mariana common moorhen: decline of an island endemic. Condor 93:38-43.

S91SPELCNMUS, Legacy reference. Physical copy not yet located.

Graham, T. E. 1991. Pseudemys rubriventris. Cat. Am. Amph. Rept. 510.1-510.4.

Ownbey, G. B., and T. Morley. 1991. Vascular plants of Minnesota: A checklist and atlas. University of Minnesota Press, Minneapolis.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #17 on 2 Aug 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #31 29 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Blanco stop #5 on 8 May 1991.

Sherry, T. W., and R. T. Holmes. 1991. Population age structure of long-distance migratory passerine birds: variation in time and space. Acta XX Congressus Internationalis Ornithologici.

Burns, B. (1991) 1991 Meican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 20 p.

Human Systems Research, Inc. 1991. Mountains of sunlit silence: White Sands Missile Range inventory sample survey of the southern San Andres Mountains, New Mexico.

Painter, C.W. 1991. Results of the 1990 survey for the Gray-checkered whiptail (Cnemidophorus dixoni) on Bureau of Land Management (BLM) lands in southwestern New Mexico. 20 p.

Taiz, J.D. Reichenbacher, F.W. (1991) 1991 Inventory of Mexican Spotted Owl (Strix occidentalis lucida Nelson) in the Gila Natioanl Foret, Wilderness District. 33 p.

Rinne, J. L. and W. L. Minckley. 1991. Native fishes of arid lands: A dwindling resource of the desert southwest. U.S. Department of Agriculture, Forest Service, General Technical Report RM-206. Rocky Mountain Forest and Range Experiment Station, Fort Col

Bollinger, E.K. 1991. Conservation of grassland birds in agricultural areas. Pages 279-287 in D.J. Decker, M.E. Krasny, G.R. Goff, C.R. Smith, and D.W. Gross, editors. Challenges in the conservation of biological resources. Westview Press, Boulder, CO.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #7 on 22 July 1991.

Glahn, J. F., et al. 1991. Impact of roost control on local urban and agricultural blackbird problems. Wildl. Soc. Bull. 19:511-522.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #22 24 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Aztec plot #6 on 25 April 1991.

Heusmann, H. W. 1991. The history and status of the mallard in the Atlantic Flyway. Wildl. Soc. Bull. 19:14-22.

Morrell, T. E., R. H. Yahner, and W. L. Harkness. 1991. Factors affecting detection of great horned owls by using broadcast vocalizations. Wildl. Soc. Bull. 19:481-488.

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