De Smet, K.D., and M.P. Conrad. 1991. Management and research needs for the Baird's sparrow and other grassland species in Manitoba. Proceedings of the The Second Endangered Species and Prairie Conservation Workshop, Provincial Museum of Alberta. Natural

Henson, P., and T. A. Grant. 1991. The effects of human disturbance on trumpeter swan breeding behavior. Wildl. Soc. Bull. 19:248-257.

Li, P. and T. E. Martin. 1991. Nest-site selection and nesting success of cavity-nesting birds in high elevation forest drainages. Auk 108:405-418.

Peterson, A. T. 1991. Gene flow in scrub jays: frequency and direction of movement. Condor 93:926-934.

Steidl, R. J., C. R. Griffin, and L. J. Niles. 1991a. Differential reproductive success of ospreys in New Jersey. J. Wildl. Manage. 55:266-272.

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.

Rosenberg, K.V., R.D. Ohmart, W.C. Hunter, and B.W. Anderson. 1991. Birds of the Lower Colorado River valley. The University of Arizona Press, Tucson. 416 pp.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #5 on 22 July 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #2A, 27 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area - Radio tower plot #12 on 3 May 1991.

Martin, K. 1991. Photographs of an Aplomado Falcon observed near RITA site, WSMR. 4 p.

Clayton, P. 1991. Plant survey for Abronia bigelovii, Astragalus feensis and Pediocactus papyracanthus on the Ball Ranch. Unpubl. report by New Mexico Natural Heritage Program for The Nature Conservancy, NMNHP contract 91-07-10. 10 p.

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

Peckinpaugh, M. 1991. Summary of Least tern observations, summer 1991. Report to Nongame Program, NM Dept. of Game and Fish.

Minckley, W. L. 1991. Professor of Zoology. Arizona State University, Tempe, AZ.

Wood, S. 1991. Argemone pleiacantha ssp pinnatisecta: Alamo Canyon July 1991. . 2 p.

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

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

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

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

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.

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.

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

Reed, S. and P. Hyder 1991. USGS Arabela 7.5' topo map with Astragalus kerrii from 23-31 May 1991 field survey for TNC.

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

Abeyta, A. (1991) Witten Notes on Cabresto Site Goshawk Nest. Questa Ranger District, Carson National Forest, USFS. 1 p.

DeBruin, E. 1991. Sensitive plants of the Gila National Forest. Unpubl. report by New Mexico Natural Heritage Program for the Sensitive Species Workshop, April 29-30, 1991.

Sheppard, J. L. pers. comm. Colorado Department of Natural Resources, Division of Wildlife, 6060 Broadway, Denver, CO 80216.

Unknown, 1991. Fish Collection Records: Costilla and Ponil Creeks, New Mexico Department of Game and Fish, "Fish Data Base."

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

Burns, B. (1991) 1991 Mexican Spotted Owl Inventory Form, Retrieved from Silver City Ranger District, Gila National Forest, USFS. 28 p.

Kartesz, J. 1991. [Synonymized checklist of the vascular flora of North America north of Mexico, Hawaii, and the U.S. Caribbean islands]. Advance copy [in database form] of manuscript submitted for publication to Timber Press, Portland, Oregon.

Quesenberry, L. 1991. Unpub. printout of Bureau Land Mgt. database of Gilia formosa on disturbed site and well locations moved due to G. formosa. 4 pp.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC, Fort Stanton - Stop #15 on 24 May 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area- NW 1, "Lisa F.H. plot" 18 April 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 #10 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-east fork Kutz Canyon-stop #5 on 22 April 1991.

Horton, J. and C. Persichetty. 1991. Field survey to Capitan Mts. - Pierce Canyon Arroyo at Forest Rd. 57, 23 May 1991.

Adams, D. A. and J. S. Hammond. 1991. Changes in forest vegetation, bird, and small mammal populations at Mount Mitchell, North Carolina--1959/62 and 1985. Journal of the Elisha Mitchell Scientific Society 107:3-12.

Castrale, J. S. 1991. Eastern woodland buteos. Pages 50- 9 in Proceedings of Midwest Raptor Management Symposium and Workshop 27 Feb - 1 Mar 1989, Chicago, Illinois. National Wildlife Federation Scientific and Technical Series No. 15.

Dittmann, D. L., and R. M. Zink. 1991. Mitochondrial DNA variation among phalaropes and allies. Auk 108:771-779.

Holway, D. A. 1991. Nest-site selection and the importance of nest concealment in the black-throated blue warbler. Condor 93:575-581.

Lincoln National Forest. 1991. Maps of exclosures to protect Cirsium vinaceum, Lincoln NF, Alamagordo, NM.

Parren, S. G. 1991. Evaluation of nest-box sites selected by eastern bluebirds, tree swallows, and house wrens. Wildl. Soc. Bull. 19:270-277.

U.S. Fish and Wildlife Service (USFWS). 1991. Utah prairie dog recovery plan. Denver, CO. 41 pp.

Schmutz, J.K. 1991b. Age-related differences in reproductive success among Ferruginous and Swainson's hawks in Alberta. Journal of Raptor Research 25:160.

Wayne, R. K., et al. 1991. Conservation genetics of the endangered Isle Royale gray wolf. Conservation Biology 5(1)41-

Advanced Sciences, Inc. 1991. Threatened and endangered species survey at ATACMS NECI and FIX sites, final report. WSMR Environmental Services report no. EA-006-91, prepared under WSMR contract DAAD07-90-C-0018, Work Assignment Order 300-23. 11 October 19

Gila National Forest. 1991. Mexican Spotted Owl annual monitoring and inventory summary.

Bestgen, Kevin R. and Steven P. Platania. 1991. Status and conservation of the Rio Grande silvery minnow, ^&Hybognathus amarus. Southwest. Nat. 36(2): p225-232.

Diamond, A. W. 1991. Assessment of the risks from tropical deforestation to Canadian songbirds. Transactions of the North American Wildlife and Natural Resources Conference 56:177-194.

Herkert, J.R. 1991a. Prairie birds of Illinois: population response to two centuries of habitat change. Illinois Natural History Survey Bulletin 34:393-399.

Livezey, B. C. 1991. A phylogenetic analysis and classification of recent dabbling ducks (tribe Anatini) based on comparative morphology. Auk 108:471-507.