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

Crum, H.A., and L.E. Anderson. 1981. Mosses of eastern North America. 2 Volumes. Columbia Univ. Press, New York. 1328 pp.

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.

Christenson, B. L.. 1981. Reproductive ecology of and response to disturbance by common loons in Maine. University of Maine, Orono, Maine. M.S. thesis.

WESTEC Service, Inc. 1981. 810400. Status Report submitted to the Office of Endangered Species.

Confer, J. L., and K. Knapp. 1981. Golden-winged warblers and blue-winged warblers: the relative success of a habitat specialist and a habitat generalist. Auk 98:108-114.

Marking, L. L. and T. D. Bills. 1981. Sensitivity of four species of carp to selected fish toxicants. North American Journal of Fisheries Management. 1:51-4.

Zammuto, R. M. and E. C. Franks. 1981. Environmental effects on roosting behavior of Chimney Swifts. Wilson Bulletin 93:77-84.

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.

Dressler, R. 1981. The Orchids: Natural History and Classification. Harvard Univ. Press, Cambridge, MA. 332 pp.

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

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

Dinsmore, J. J. 1981. Piping plovers - a synthesis of the literature and an annotated bibliography. Unpublished report. 28 pp.

Worthington, R.D. 1981. Status report, Oenothera organensis, Organ Mountains Primrose, Fish and Wildlife Service, Albuquerque, NM. 9 p.

Koppinger, D.G. 1981. U.S. Geological Survey topographic map containing generalized locations of Rumex orthoneurus throughout the Coronado National Forest. Arizona Natural Heritage Program. 8 p.

Crawford, H. S., R. G. Hooper, and R. W. Titterington. 1981. Songbird population response to silvicultural practices in central Appalachian hardwoods. Journal of Wildlife Management 45:680-92.

Massey, B. W. 1981. A least tern makes a right turn. Nat. Hist. 90:61-72.

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.

Dunham, A. E. 1981. Populations in a fluctuating environment: the comparative population ecology of the iguanid lizards Sceloporus merriami and Urosaurus ornatus. University of Michigan Museum of Zoology Miscellaneous Publications (158): 1-62.

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.

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.

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.

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.

Henny, C.J., and L.J. Blus. 1981. Artificial burrows provide new insight into burrowing owl nesting biology. Raptor Research 15:82-85.

Coad, B. W. 1981. A bibliography of the sticklebacks. Syllogeus 35:1-142.

Larrison, E.J. and D.R. Johnson. 1981. Mammals of Idaho. The University of Idaho Press, Moscow.

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

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.

Otte, Daniel. 1981. The North American Grasshoppers. Volume 1. Acrididae (Gomphocerinae and Acridinae). Harvard University Press. 275 pp.

Becker, D. M. and I. J. Ball. 1981. Impacts of surface mining on Prairie Falcons: Recommendations for monitoring and mitigation. Unpubl. Rep. Montana Coop. Wildl. Res. Unit, Univ. Montana, Missoula.

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.

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

Smith, D.G., J.R. Murphy, and N.D. Woffinden. 1981. Relationships between jackrabbit abundance and Ferruginous Hawk reproduction. Condor 83:52-56.

Dickson, J. G., and C. A. Segelquist. 1981. Breeding bird populations in pine and pine-hardwood forests in Texas. J. Wildlife Manage. 43(2):549-555.

Barrows, C.W. 1981. Roost selection by spotted owls: an adaptation to heat stress. Condor 83:302-309.

Smith, J.N.M. 1981. Cowbird parasitism, host fitness and age of the host female in an island Song Sparrow population. Condor 83:152-161.

Hillis, D. M. 1981. Premating isolating mechanisms among three species of the Rana pipiens complex in Texas and Oklahoma. Copeia 1981:312-319.

Proctor, N. 1981. The black rail: mystery bird of the marsh. Connecticut Warbler 1(2):15-16.

Ferris, C.D. and F.M. Brown (eds). 1981. Butterflies of the Rocky Mountains. University of Oklahoma Press. Norman. 442 pp.

Maser, C., B. R. Mate, J. F. Franklin, and C. T. Dyrness. 1981. Natural history of Oregon coast mammals. Pacific Northwest Forest and Range Expt. Sta., USDA, Forest Service, Gen Tech. Rep. PNW-133:1-496.

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

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.

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.

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.