Newton, I., I. Wyllie, and A. Asher. 1991. Mortality causes in British Barn Owls Tyto alba with a discussion of aldrin-diedrin poisoning. Ibis 133: 162-169.

Russell, R. W., et al. 1991. A visual study of migrating owls at Cape May Point, New Jersey. Condor 93:55-61.

Thompson, D. B., J. H. Brown, and W. D. Spencer. 1991. Indirect facilitation of granivorous birds by desert rodents: experimental evidence from foraging patterns. Ecology 72(3):852-683.

Anderson, J. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Gennaro, A.L. 1991. Breeding of an urban population of Mississippi kites in Clovis, NM during the summer of 1990. Report to Nongame Program, NM Dept. of Game and Fish.

Madrid, R. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Silver City Ranger District, Gila National Forest, USFS. 4 p.

Sullivan, R.M. and Richard A. Smartt. 1991. Survey of the proposed ACTC facilities, including new roads, anchor facilities on the Little Burro Mountains, support area, winch site, cable drop zone, explosive storage site, and the jeep trail access from Nor

Wood, T. 1991. Results of 1991 amphibian monitoring on the Coronado National Forest. The Nature Conservancy and U.S. Forest Service.

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.

Avise, J. C., C. D. Ankney, and W. S. Nelson. 1991. Mitochondrial gene trees and the evolutionary relationship of mallard and black ducks. Evolution 44:1109-1119.

Burger, J., and R. T. Zappalorti. 1991. Nesting behavior of pine snakes (Pituophis m. melanoleucus) in the New Jersey Pine Barrens. J. Herpetol. 25:152-160.

Garrott, R. A. 1991b. Sex ratios and differential survival of feral horses. J. Anim. Ecol. 60:929-937.

Johnson, F. A., et al. 1991. Distribution, abundance, and habitat use by mottled ducks in Florida. J. Wildl. Manage. 55:476-482.

Nehlsen, W., J. E. Williams, and J. A. Lichatowich. 1991. Pacific salmon at the crossroads: stocks at risk from California, Oregon, Idaho, and Washington. Fisheries 16(2):4-21.

Rosen, P. C. 1991. Comparative ecology and life history of the racer (Coluber constrictor) in Michigan. Copeia 1991:897-909.

Walker, J. M., et al. 1991. Activity, temperature, age, size and reproduction in the parthenogenetic whiptail lizard Cnemidophorus dixoni in the Chinati Mountains in Trans-Pecos Texas. Am. Midl. Nat. 126:256-268.

Pianka, E. R. 1991. Phrynosoma platyrhinos. Catalog of American Amphibians and Reptiles 517: 1-4.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #23 on 5 Aug 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #11A, 27 May, 1991

DeBruin, E. 1991. Field survey to Farmington Resource Area - Hampton Arroyo ACEC plot #17 on 6 May 1991.

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.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #2 on 19 July 1991.

Alldredge, A. W., R. D. Deblinger, and J. Peterson. 1991. Birth and fawn bed site selection by pronghorns in a sagebrush-steppe community. J. Wildl. Manage. 55:222-227.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #21 24 May, 1991.

Burns, R. J., H. P. Tietjen, and G. E. Connolly. 1991. Secondary hazard of Livestock Protection Collars to skunks and eagles. J. Wildl. Manage. 55:701-704.

DeBruin, E. 1991. Field survey to Farmington Resource Area- Aztec ACEC - stop #8 on 6 May 1991.

Einemann, L. 1991. A nesting report of a Wilson's Phalarope in Lancaster County. Nebraska Bird Review 59:59-61.

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

Kraus, F., P.K. Ducey, P. Moler,. and M.M. Miyamoto. 1991. Two new triparental unisexual Ambystoma from Ohio and Michigan. Herpetologica. 47:429-439.

Mattson, D. J., et al. 1991b. Bear feeding activity at alpine insect aggregation sites in the Yellowstone ecosystem. Canadian J. Zoolgoy 69:2430-2435.

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

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

Ridgway, M. S., J. A. MacLean, and J. C. MacLeod. 1991a. Nest-site fidelity in a centrarchid fish, the smallmouth bass (Micropterus dolomieui). Canadian Journal of Zoology 69:3103-3105.

DeBruin, E. 1991. Gilia formosa inventory and monitoring project. Unpubl. report by New Mexico Natural Heritage Program for BLM Farmington Resource Area. 8 p. + app.

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

Todsen, T.K. 1991. Unpubl. plant occurrence record for Malaxis tenuis, map and letter, 17 May 1991.

Gonzalez, M., S. Gonzalez, and Y. Herrera. 1991. Listados floristicos de Mexico. IX. Flora de Durango. Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Mexico, D.F. 167 pp.

Burns, B. (1991) 1991 Mexican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 30 p.

Jennings, R. 1991. Alamosa Warm Springs-microhabitats. Unpub. Rana chiricahuensis data from Randy Jennings. Biology Dept. UNM.

Quesenberry, L. 1991. Unpub. printout of Bureau Land Mgt. T & E plant database for Gilia formosa 2 Jan. 1991. 2 pp.

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 #3 on 22 May 1991 - Mammillaria heyderi.

DeBruin, E. 1991. Field survey to Tularosa Mts - Long canyon on 23 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #21 on 8 May 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Kitten Canyon stop #9 on 5 May 1991.

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.

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.