Havlik, M.E. 1981. The historic and present distribution of the endangered mollusk Lampsilis higginsi (Lea 1857). Bulletin of the American Malacological Union for 1980: 19-22.

Rickard, W. H., R. E. Fitzner, and C. E. Cushing. 1981. Biological colonization of an industrial pond, status after two decades. Environmental Conservation 8:241-7.

Morrison, M. L. 1981a. Population trends of the Loggerhead Shrike in the United States. Am. Birds 35(4): 754-757.

Ferguson, H.L., and P.D. Jorgensen. 1981. An efficient trapping technique for burrowing owls. North American Bird Bander Oct.-Dec.:149.

Munther, G. L. 1981. Beaver management in grazed riparian ecosystems. Proceedings of the Wildlife-Livestock Relationships Symposium, Coeur d'Alene, Idaho, pages 234-241.

Hall, E. R. 1981a. The Mammals of North America, second edition. Vols. I & II. John Wiley & Sons, New York, New York. 1181 pp.

Freeman, P. W. 1981. A multivariate study of the family Molossidae (Mammalia, Chiroptera): morphology, ecology, evolution. Fieldiana Zool. 7:1-173.

Broschart, M.R. (1981) Nesting Study of a Peregrine Falcon Pair in the Carson National Forest, New Mexico.

Escherich, P. C. 1981. Social biology of the bushy-tailed woodrat, Neotoma cinerea. Univ. California Pub. Zool. 110: xiv + 132 pp.

Jacobs, R.W. (1981) Environmental Assessment on Rio Grande Cutthroat Trout Restoration. Retrieved from Regional Office, USFS. 17 p.

Fletcher, R.1981. Anticipated Effects of Timber sale on Allium gooddingii. United States Forest Service (USFS) Regional Office, Albuqueruqe, NM. p.9.

Worthington, R. 1981. Status Report for Potentilla sierrae-blancae. Endangered Species Office, Fish and Wildlife Service, Albuquerque, New Mexico. USDS

Dalsted, K. J., et al. 1981. Application of remote sensing to prairie dog management. Journal of Range Management 34:218-23.

Morrison, M. L. 1981a. Population trends of the Loggerhead Shrike in the United States. American Birds 35(4):754-7.

Inouye, R. S., N. J. Huntly and D. W. Inouye. 1981. Non-random orientation of Gila Woodpecker nest entrances in saguaro cacti. Condor 83:88-89.

Rollins, D. 1981. Diets of sympatric bobwhite and scaled quail in Oklahoma. Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies 35:239-248.

Opler, P. A. 1981. Management of prairie habitats for insect conservation. Natural Areas J. 1(4): 3-6.

Fitch, H.S., W.S. Brown, and W.S. Parker. 1981. Coluber mormon, a species distinct from C. constrictor. Trans. Kansas Acad. Sci. 84:196-203.

Potter, E. F. 1981. Effects of cool weather on nesting behavior and development in the Yellow-billed Cuckoo. Chat 45:15-16.

Hayes, B. 1981. The grizzly bear: portraits from life. 370 pp.

Hall, J. G. 1981c. A field study of the Kaibab squirrel in Grand Canyon National Park. Wildlife Monographs No. 75:1-54.

Conner, J. and A. Price. 1981. Inventory of terrestrial wildlife species for the Stallion Planning Unit based on methods from the Integrated Habitat and Classification System (IHICS), Prepared by Socorro District, BLM. 206p.+app.

Crawford, R. L. 1981. Bird casualties at a Leon county, Florida tv tower: a 25-year migration study. Bull. Tall Timbers Res. Sta., No. 22.

Fritts, S. H., and L. D. Mech. 1981. Dynamics, movements, and feeding ecology of a newly protected wolf population in northwestern Minnesota. Wildlife Monographs No. 80:1-79.

Johnson, A.R. 1981. Habitat utilization by Lark Buntings (CALAMOSPIZA MELANOCORYS) in a cold desert mixed shrub community. M.S. thesis. Brigham Young University, Provo, UT. 16 pp.

Dexter, R. W. 1981a. Nesting success of Chimney Swifts related to age and the number of adults at the nest, and the subsequent fate of the visitors. Journal of Field Ornithology 52:228-232.

O'Farrell, M.J. 1981. Status report: Euderma maculatum. Prepared for Office of End. Spp. US Fish and Wildlife Service, P.O. Box 1306, Albq, NM. 87103. Pp 1-29.

Kantrud, H. A. 1981. Grazing intensity effects on the breeding avifauna of North Dakota native grasslands. Canadian Field-Naturalist 95:404-417.

Schneider, D.C., and B.A. Harrington. 1981. Timing of shorebird migration in relation to prey depletion. Auk 98:801-81.

Platz, J. E. 1981. Suture zone dynamics: Texas populations of Rana berlandieri and R. blairi. Copeia 1981:733-734.

Hamerstrom, F., and M. Kopeny. 1981. Harrier nest-site/vegetation. Raptor Res. 15:86-8.

Bee, J.W., R.S. Hoffmann, G. Blass, R.R. Paterson. 1981. Mammals in Kansas. Universtiy of Kansas Publications, Mus. Nat.Hist., Public Ed. Series No. 7., Lawrence.

Johnsgard, P. A. 1981. The plovers, sandpipers, and snipes of the world. Univ. Nebraska Press, Lincoln. 493 pp.

Cook, J.A. 1981. The bat fauna of the Animas Mountains in the summer of 1981. Museum of Southwestern Biology, University of New Mexico. Unpublished manuscript. 25 pp.

DeGraaf, R. M., G. M. Witman, and D. D. Rudis. 1981. Forest habitat for mammals of the northeast. NE Forest Experiment Station, Forest Service, U.S. Department of Agriculture, Amherst, Massachusetts.

LaFontaine, G. 1981. Caddisflies. The Lyons Press, Guilford, Connecticut. 336 pp.

Landye, J.J. 1981. Current status of endangered, threatened and/or rare molluscs of NM and AZ. Unpub report for Bureau of Sport Fisheries and Wildlife Office of Rare and Endangered Species [now U.S. FWS], Albuq, NM. 35 pp. CONTRACT #14-16-0002-80-227.

Bull, E. L., A. D. Partridge, and W. G. Williams. 1981. Creating snags with explosives. Pacific Northwest Forest and Range Experiment Station, U.S. Forest Service. Research Note PNW-393.

Fagerstone, K. A., H. P. Tietjen and O. Williams. 1981. Seasonal variation in the diet of black-tailed prairie dogs. Journal of Mammalogy 62:820-4.

Ogden, J. C. and B. W. Patty. 1981. The recent status of the Wood Stork in Florida and Georgia. Georgia Department of Natural Resources, Game and Fish Division Technical Bulletin WL 5:97-101.

Seiler, G.J., L. Cuk, and C.E. Rogers. 1981. New and interesting distribution records for Helianthus paradoxus (heiser) Asteraceae. Southwestern Naturalist 26(4): 431-432.

Ralph, C. J. 1981. Age ratios and their possible use in determining autumn routes of passerine migrants. Wilson Bulletin 93:164-188.

Hayward, B. 1981. Mexican chickadee. New Mexico Ornithological Society field notes. R.A. Goodman (ed) Vol 21(1):10. 1 Dec 81 - 28 Feb 82.

Brune, G. 1981. Springs of Texas. Volume 1. Branch-Smith, Inc. Fort Worth, Texas.

Junge, J. A., and R. S. Hoffmann. 1981. An annotated key to the long-tailed shrews (genus Sorex) of the United States and Canada, with notes on the Middle American Sorex. Occas. Pap. Univ. Kansas Mus. Nat. Hist. 94:1-48.

Mugaas, J. N., and J. R. King. 1981. Annual variation of daily energy expenditure by the black-billed magpie. Cooper Ornitholog. Soc. 78 pp.

Crellin, J. 1981. Unpublished Letter to District Ranger, Taos. Subject: Record of Decision and Finding of No Significant Effect for Rio Grande Cutthroat Trout Restoration on Rio Chiquito. USFS

Fiala, F.C. (1981) Final Report: Status of Peregrine Falcons, Agua Dulce Eyrie, Lincoln National Forest, New Mexico, 1980. Forest Supervisor's Office, Lincoln National Forest, USFS. 34 p.

U.S. Department of Commerce. 1981. 1978 census of agriculture. Volume 1, Part 46: Virginia state and county data. U.S. Department of Commerce, Washington, D.C. 691 pp.

Chesser, R. K. 1981. Genetic and morphologic variation within and among populations of the black-tailed prairie dog. Unpublished dissertation submitted to the graduate faculty of the University of Oklahoma.

Miller, L. D. and F. M. Brown. 1981. A Catalogue/Checklist of the Butterflies of America North of Mexico. The Lepidopterists' Society Memoir No. 2, Sarasota, Florida. 280 pp.

Unknown (1981) Unpublished map of Carson National Forest with notes. Retrieved from Carson Supervisor's Office, Carson National Forest, USFS.12 p.

Limerick, S. 1981. Proposed rule for Penstemon alamosensis. Office of Endangered Species, U.S. Fish and Wildlife Service. Albuquerque, NM.

Hull, C. 1981. Great Lakes piping plover in trouble. Michigan Department of Natural Resources, Lansing, Michigan. 2 pp.

Fischer, D. H. 1981. Wintering ecology of thrashers in southern Texas. Condor 83:340-346.

Reich, L.M. 1981. Microtus pennsylvanicus. Am. Soc. Mamm., Mammalian Species No. 159. 8pp.

Alvo, R. 1981. Marsh nesting of common loons (GAVIA IMMER). Can. Field Nat. 95:357.

Singer, F. J., et al. 1981. Home ranges, movements, and habitat use of European wild boar in Tennessee. J. Wildl. Manage. 45:343-353.

Baker, J. A., and R. J. Brooks. 1981. Distribution patterns of raptors in relation to density of meadow voles. Condor 83: 42-7.

Reynolds, T.D., and C.H. Trost. 1981. Grazing, crested wheatgrass, and bird populations in southeastern Idaho. Northwest Science 5:225-235.