Burger, J., and M. Gochfeld. 1991. Reproductive vulnerability: parental attendance around hatching in roseate (STERNA DOUGALLII) and common (S. HIRUNDO) terns. Condor 93:125-129.

DeBlieu, J. 1991. Remodeling the condor. New York Times Magazine, 18 November 1991.

Gerhardt, R. P., M. A. Vasquez, and D. M. Gerhardt. 1991. Breeding biology, food habits, and siblicide of swallow-tailed kites. Pages 65-71 in Maya Project, Progress Report 4 (D. F. Whitacre, W. A. Burham, and J. P. Jenny, eds.). The Peregrine Fund, Boise

Gibbs, J. P. 1991. Spatial relationships between nesting colonies and foraging areas of great blue herons. Auk 108:764-770.

Manning, R. W. and J. R. Goetze. 1991. First record of the elf owl (MICRATHENE WHITNEYI WHITNEYI) east of the Pecos River, Texas. Texas Journal of Science 43:103-104.

Falvey, B. 1991. Gilia formosa sites on Horn Canyon Quad. BLM, Farmington, NM.

Nichols, J. D. 1991. Science, population ecology, and the management of the American black duck. J. Wildl. Manage. 55:790-799.

Sauer, J. R., and J. B. Bortner. 1991. Population trends from the American woodcock singing-ground survey, 1970-1988. J. Wildl. Manage. 55:300-312.

Thompson, C.W. 1991d. The sequence of molts and plumages in painted buntings and implications for theories of delayed plumage maturation. Condor 93:209-235.

Anderson, D.L. 1991. Plant collection log sheet for ^&Talinum longipes - log #41: Mockingbird Gap. 25 July 1991.

Fisher, R.E. 1991. Notes from phone conversation with Margaret Estabrook of the Reserve Ranger District, Gila National Forest on 7 Oct 1991.

Madrid, R. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Forms. Silver City Ranger District, Gila National Forest, USFS. 6 p.

Snow, P. Herrera, D. Miller, S. Ocana, P. 1991. 1990 Mexican Spotted Owl Inventory Form, El Rito Ranger District, Carson National Forest. USFS.

Unknown (1991) 1991 Humbolt Demographic Study Sighting. Retrieved from silver City Ranger Distict, Gila National Forest, USFS. 3 p.

Belthoff, J. R., and S. A. Gauthreaux, Jr. 1991. Partial migration and differential winter distribution of house finches in the eastern United States. Condor 93:374-382.

Derr, J. N. 1991. Genetic interactions between white-tailed and mule deer in the southwestern United States. J. Wildl. Manage. 55:228-237.

Hejl, S.J., and R.E. Woods. 1991. Bird assemblages in old-growth and rotation-aged Douglas-fir/ponderosa pine stands in the northern Rocky Mountains: a preliminary assessment. In D.M. Baumgartner and J.E. Lotan, editors. Interior Douglas-fir: the species

Lee, T. E., Jr., and M. D. Engstrom. 1991. Genetic variation in the silky pocket mouse, (Perognathus flavus) in Texas and New Mexico. J. Mamm. 72:273-285.

Person, D. K., and D. H. Hirth. 1991. Home range and habitat use of coyotes in a farm region of Vermont. J. Wildl. Manage. 55:433-441.

Smith, H. M., D. Chiszar, and W. Marmie. 1991. Peripheral variation in the lizard Sceloporus olivaceus, and its hybridization with S. undulatus. Bull. Maryland Herp. Soc. 27(3):128-145.

Christens, E., and H. Blokpoel. 1991. Operational spraying of white mineral oil to prevent hatching of gull eggs. Wildl. Soc. Bull. 19:423-430.

Klenner, W., and C. J. Krebs. 1991. Red squirrel population dynamics. I. The effect of supplemental food on demography. J. Anim. Ecol. 60:961-978.

Nesom, G. L. 1991. A new species of Erigeron (Asteraceae: Astereae) from Northwestern New Mexico. Phytologia. 71(5): 416-419.

Schmutz, J. K., R. W. Fyfe, U. Banasch and H. Armbruster. 1991. Routes and timing of migration of falcons banded in Canada. Wilson Bull. 103:44-58.

Young, B. E. 1991. Annual molts and interruption of the fall migration for molting in Lazuli buntings. Condor 93:236-250.

New, T. R. 1991. Butterfly Conservation. Oxford Univ. Press, Australia. 224 pp.

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.

Britton, B. 1991. Unpublished plant element occurrence record for Allium gooddingii in BS Canyon, Sept. 1988. + map.

Henry, A. 1991. Unpub. letter to Pat Mehlhop regarding Aplomado Falcon sightings on the Gray Ranch. February 15, 1991.

Painter, C.W. 1991. Letter from Charlie Painter, Endangered Species biologist for NM Dept. Game and Fish to Pat Mehlhop of NMNHP dated 4 Sept. 1991 regarding Sceloporus scalaris localities in Hidalgo Co. 1 pp.

Sullivan, R.M. 1991. Live trapping of potential habitat for the meadow jumping mouse (Zapus hudsonius luteus) at the San Jose drain outfall area. Preliminary environmental report submitted to the Marron/Taschek/Knight Corporation.

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

Bestgen, K. R., and S. P. Platania. 1991. Status and conservation of the Rio Grande silvery minnow, Hybognathus amarus. Southwestern Naturalist 36:225-232.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #15 on 29 July 1991.

Clark, D. R., Jr., and C. M. Bunck. 1991. Trends in North American small mammals found in common barn-owl (TYTO ALBA) dietary studies. Can. J. Zool. 69:3093-3102.

Fleischer, R. C., S. I. Rothstein, and L. S. Miller. 1991. Mitochondrial DNA variation indicates gene flow across a zone of known secondary contact between two subspecies of the brown-headed cowbird. Condor 93:185-189.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #9 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area- ACEC Area #12 on 25 April 1991.

Stoltz, J., and J. Schnell (eds.). 1991. Trout: The Wildlife Series. Stackpole Books, Harrisburg, Pennsylvania. 384 pp.

Kraus, F., and M. M. Miyamoto. 1991. Rapid cladogenesis among the pecoran ruminants: evidence from mitochondrial DNA sequences. Systematic Zoology 40:117-130.

Mayden, R. L., W. J. Rainboth, and D. G. Buth. 1991. Phylogenetic systematics of the cyprinid genera Mylopharodon and Ptychocheilus: comparative morphometry. Copeia 1991:819-834.

Anderson, J. (1991) Map of Red Canyon MSO Survey # 2. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Rogers, M. A. 1991a. Evolutionary differentiation within the northern Great Basin pocket gopher, Thomomys townsendii. I. Morphological variation. Great Basin Nat. 51:109-126.

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

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.

Grooms, S., and D. Peterson. 1991. Bluebirds! NorthWord Press, Inc. 160 pp.

Black, C. and J. Black. 1991. Gray Ranch breeding bird surveys June, August, November 1991. Unpubl. field notes for survey done for NMNHP.

Harper, Hooley, Valdez, Franklin, Martinez. 1991. 1991 Mexican Spotted Owl Inventory Form, El Rito Ranger District, Carson National Forest, USFS. 3p.

New York Department of Environmental Conservation. 1991. Status of beaver management in New York. Draft report.

Unknown, 1991. Spotted Owl Narrative Report, Carson National Forest, USFS. 5 p.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #24 on 6 Aug 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-east fork Kutz Canyon-stop #13 on 7 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - near stop #3 on 22 MAY 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #3 23 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area-Kutz ACEC area stop #16 on 9 May 1991.

USDA-FS. 1991. Forest Service map of Gila National Forest with EO and survey locations of Allium gooddingii. From Margaret Estabrook of Reserve Ranger District, Gila N.F.