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

Buehler, D. A., et al. 1991a. Differences in distribution of breeding, nonbreeding, and migrant bald eagles on the northern Chesapeake Bay. Condor 93:399-408.

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

Dickerman, R. W. 1991. On the validity of BUBO VIRGINIANUS OCCIDENTALIS Stone. Auk 108:964-965.

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

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

Johnson, R. K., R. R. Roth, S. E. Kleiner, and C. R. Bartlett. 1991. A case of polygyny in the Wood Thrush. The Wilson Bulletin 103:509-10.

Manuwal, D. A. 1991. Spring bird communities in the southern Washington Cascade Range. Pages 161-174 IN L. F. Ruggiero, K. B. Aubry, A. B. Carey, and M. H. Huff, technical coordinators. Wildlife and Vegetation of unmanaged Douglas-fir Forests. USDA Forest

Prescott, D. R. C. 1991. Winter distribution of age and sex classes in an irruptive migrant, the evening grosbeak (COCCOTHRAUSTES VESPERTINUS). Condor 93:694-700.

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

Lang, A. 1991a. Status report on the American coot. Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 24 pp.

Santa Fe National Forest. 1991. Field forms and maps for Northern Goshawk nest and territory monitoring for 1991.

Winston, M. R., C. M. Taylor, and J. Pigg. 1991. Upstream extirpation of four minnow species due to damming of a prairie stream. Transactions of the American Fisheries Society 120:98-105.

Belk, M. C., and H. D. Smith. 1991. Ammospermophilus leucurus. Am. Soc. Mamm., Mammalian Species No. 368:1-8.

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 #9 on 22 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Kutz Canyon - Stop #19 on 9 May 1991.

Reed, S. and P. Hyder 1991. USGS Capitan Peak 7.5' topo map with Mammillaria heyderi, Epithelantha micromeris and Astragalus kerrii from 23-31 May 1991 field survey for TNC.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Flora Vista, stop #3 on 23 April 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area- Aztec- stop #11 on 22 April 1991.

Brennan, L. A. 1991. How can we reverse the northern bobwhite population decline? Wildl. Soc. Bull. 19:544-555.

Dawson, J. W., and R. W. Mannan. 1991a. Dominance hierarchies and helper contributions in Harris' hawks. Auk 108:649-660.

Laycock, W.A. 1991. Stable states and thresholds of range condition on North American rangelands: a viewpoint. Journal of Range Management. 44(5):427-433.

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

Rogers, M. A. 1991b. Evolutionary differentiation within the northern Great Basin pocket gopher, Thomomys townsendii. II. Genetic variation and biogeographic considerations. Great Basin Nat. 51:127-152.

Taylor, W. K., and M. A. Kershner. 1991. Breeding biology of the great crested flycatcher in central Florida. J. Field Ornithol. 62:28-39.

Anderson, D.L. 1991. Plant collection log sheet for ^&Astralagus castetteri - log #19: west slopes of Goat Mt. 30 May 1991.

Ferguson, D. 1991. Unpub notes from phone conversation with Ellen DeBruin 12 April 1991.

Lincoln National Forest. 1991. Mexican Spotted Owl daytime follow-up visit form, survey for Mexican Spotted Owl.

Santa Fe National Forest. 1991. Mexican Spotted Owl daytime follow-up visit form, survey for Mexican Spotted Owl.

American Ornithologists' Union (AOU). 1991. Thirty-eighth supplement to the American Ornithologists' Union Check-list of North American birds. Auk 108:750-4.

Deacon, J. E., and C. D. Williams. 1991. Ash Meadows and the legacy of the Devils Hole pupfish. Pages 69-87 in W. L. Minckley and J. E. Deacon, eds. Battle against extinction: native fish management in the American West. University of Arizona Press, Tucso

Hammerson, G. A., and H. M. Smith. 1991. The correct spelling of the name of the short-horned lizard of North America. Bull. Maryland Herp. Soc. 27(3):121-127.

Klenner, W. 1991. Red squirrel population dynamics. II. Settlement patterns and response to removals. J. Anim. Ecol. 60:979-993.

Pashley, D. 1991. Shorebirds, gulls, and terns: Louisiana, Mississippi, Alabama. Pages 79-83. in Proceed. of the Coastal Nongame Workshop. Dawn Jenings (ed.) U.S. Fish and Wildl. Serv., Region 4, and Florida Game Fresh Water Fish Commission. Gainsville, F

Siegel-Causey, D., C. Lefevre, and A. B. Savinetskii. 1991. Historical diversity of cormorants and shags from Amchitka Island, Alaska. Condor 93:840-852.

Garrott, R. A., T. C. Eagle, and E. D. Plotka. 1991a. Age-specific reproduction in feral horses. Can. J. Zool. 69:738-743.

Jackson, G. D. 1991. Field identification of teal in North America: female-like plumages. Part I: blue-winged, cinnamon, and green-winged teal. Birding 23(3):124-133.

Mayer, P. M., and M. R. Ryan. 1991b. Electric fences reduce mammalian predation on piping plover nests and chicks. Wildlife Society Bull. 19:59-63.

Reichel, J. D., and P. O. Glass. 1991. Checklist of the birds of the Mariana Islands. Elepaio 50:3-11.

Tyus, H. M. 1991. Ecology and management of the Colorado squawfish. Pages 379-402 in W. L. Minckley and J. E. Deacon, editors. Battle against extinction: native fish management in the American West. Univ. Arizona Press, Tucson.

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.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 8 p.

Gorresen, M. Schwarz, H.R. (1991) Northern Goshawk Inventory Form - 1991 . Sandia Ranger District, Cibola National Forest, USFS. 3 p.

National Museum of Natural History, Smithsonian Institution. 1991. Mammals from New Mexico printout. 3 March 1991. 117 pp.

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

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

Clayton, P. 1991. Field survey to Ball Ranch - Stop #1 on 18 July 1991.

Aguero, D. A., R. J. Johnson, and K. M. Eskridge. 1991. Monofilament lines repel house sparrows from feeding sites. Wildl. Soc. Bull. 19:416-422.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #7 23 May, 1991.

Buhlmann, K. A., and M. R. Vaughan. 1991. Ecology of the turtle Pseudemys concinna in the New River, West Virginia. Journal of Herpetology 25:72-78.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #25 on 9 May 1991.

Dunbar, D. L., et al. 1991. Status of the spotted owl, STRIX OCCIDENTALIS, and barred owl, STRIX VARIA, in southwestern British Columbia. Canadian Field-Naturalist 106:464-468.