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.

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.

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 Unpublished Letter to District Ranger, Taos.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 Unpublished dissertation submitted to the graduate faculty of the University of Oklahoma.

Peterson, R.L. 1981. North American moose. 280 pp.

Unknown (1981) Unpublished map of Carson National Forest with notes.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

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

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.

Anderson, S. H., and C. S. Robbins. 1981. Habitat size and bird community management. Transatlantic North American Wildlife and Natural Resources Conference 46:511-20.

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.

Berger, A. J. 1981. Hawaiian Birdlife. Second Edition. University Press of Hawaii, Honolulu, Hawaii. xv + 260 pp.

Crellin, J. (1981) Unpublished Letter to Regional Forest, Subject: Environmental Assessment - Rio Grande Cutthroat Trout Restoration. Retrieved from Regional Office, USFS. 29 p.

Hatch, M.D. (1981) A Report Submitted to the United States Department of Interis, U.S Forest Service, Lincoln National Forest, Alamogordo, New Mexico. Project Title: A Survey of the Fishes of the Guadalupe Ranger District. Lincoln Supervisor's Office, Lin

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.

Cook, J.A. 1981. Distribution and numbers of white-sided jackrabbits (Lepus callotis) in the Animas Valley in summer 1981. Unpubl. manuscript from Museum of Southwestern Biology, University of NM, 7 pp.

Pyle, R. M. 1981. The Audubon Society Field Guide to North American Butterflies. Alfred A. Knopf, New York, New York. 916 pp. + color plates.

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.

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.

Bibby, C. J. 1981. Wintering bitterns in Britain. British Birds 74:1-10.

Keran, D. 1981. The incidence of man-caused and natural mortalities to raptors. Raptor Research 15:108-12.

Suter, G. W., II and J. L. Joness. 1981. Criteria for Golden Eagle, Ferruginous Hawk, and Prairie Falcon nest site protection. Raptor Res. 15:12-18.

Bednarz, J. C., and J. J. Dinsmore. 1981. Status, habitat use and management of red-shouldered hawks in Iowa. J. Wildlife Manage. 45:236-241.

Snyder, D. E. 1981. Contributions to a guide to the cypriniform fish larvae of the upper Colorado River system in Colorado. United States Bureau of Land Management, Biological Sciences Series 3, Denver, Colorado. 81 pp.

Aniskowicz, B. T. 1981. Behavior of a male least bittern IXOBRYCHUS EXILIS after loss of mate. Wilson Bulletin 93:395-397.

Houston, C. S. 1981. An assessment of Walter Raine and his Saskatchewan records. Bule Jay 39:168-81.

Rundle, W.D., and L.F. Fredrickson. 1981. Managing seasonally flooded impoundments for migrant rails and shorebirds. Wild. Soc. Bull. 9:80-87.

McDonald, J.N. 1981. North American Bison -- their classification and evolution. 316 pp.

Minckley, W. L. 1981. Ecological studies of Aravaipa Creek, central Arizona, relative to past, present, and future uses. Final Report. U.S. Bureau of Land Management, Safford, Arizona. Contract Number YA-512-CT6-98. 362 pp.

Gile, L.H., J.W. Hawley, and R.B. Grossman. 1981. Soils and geomorphology in the basin and range area of southern New Mexico; guidebook to the desert project. New Mexico Bureau of Mines and Mineral Resources.

Knight, P.J. 1981. Status report - Astragalus humillimus. New Mexico State Heritage Program.

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.

Craig, R. J. 1981. Comparative ecology of the Louisiana and Northern Waterthrushes. Phd. Diss., Univ. of Connecticut, Storrs.

Wallmo, O.C. 1981. The mule and black-tailed deer of North America. 605 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.

Pearce, P. A. and N. R. Garrity. 1981. Impact of aminocarb (Matacil) spraying on forest songbirds in northern New Brunswick. Canadian Wildlife Service, Progress Notes 121.

Forbes, G. S. 1981. Description and taxonomic implications of an unusual Arizona population of APODEMIA MORMO (Riodinidae). Jounal of the REsearch on the Lepidoptera 18:201-207.

Reynolds, T.D. 1981. Nesting of the Sage Thrasher, Sage Sparrow, and Brewer's Sparrow in southeastern Idaho. Condor 83:61-64.

Blem, C.R. 1981. Heterodon platyrhinos. Catalogue of American Amphibians and Reptiles. SSAR. NO. 282:1-2.

Kimmel, V. L., and L. H. Fredrickson. 1981. Nesting ecology of the red-shouldered hawk in southeastern missouri. Trans. Missouri Acad. Sci. 15:21-27.