Hafner, D. J., K. E. Petersen, and T. L. Yates. 1981. Evolutionary relationships of jumping mice (genus Zapus) of the southwestern United States. Journal of Mammalogy 62:501-512.

Roboski, J. C. and M. K. Causey. 1981. Incidence, habitat use, and chronology of woodcock nesting in Alabama. Journal of Wildlife Management 45:793-797.

Hammerquist-Wilson, M. N. and J. A. Crawford. 1981. Response of bobwhite to cover changes within three grazing systems. Jounal of Range Management 34:213-215.

Phillips, D. P., W. E. Childers, and G. S. Whitt. 1981. Management implications for different genetic stocks of largemouth bass (Micropterus salmoides) in the United States. Canadian Journal of Fisheries and Aquatic Sciences 38:1715-1723.

Freedman, B., C. Beauchamp, I. A. McLaren, and S. I. Tingley. 1981. Forestry management practices and populations of breeding birds in a hardwood forest in Nova Scotia. Canadian Field-Naturalist 95:307-311.

Matteson, S. W., and J. O. Riley. 1981. Distribution and nesting success of Zone-tailed Hawks in west Texas. Wilson Bulletin 107:719-723.

Day, J. C. U. 1981. Status of bitterns in Europe since 1976. British Birds. 74:10-6.

Morrison, M.L. 1981b. The structure of western warbler assemblages: analysis of foraging behavior and habitat selection in Oregon. Auk 98:578-588.

Garrett, K., and J. Dunn. 1981. Birds of southern California. Los Angeles Audubon Soc. 408pp.

Steele, B., F. Johnson, and S. Brunsfield, eds. 1981. Vascular plant species of concern in Idaho. Forest, Wildlife and Range Experiment Station, Moscow, ID. 161 pp.

Schoenherr, A.A. 1981. The role of competition in the replacement of native fishes by introduced species, pp. 173-203 in: Naiman, R.J. and D.L. Soltz. Fishes in North American Deserts. John Wiley and Sons, NY.

USFWS. 1981. Recovery plan for the Comanche Springs pupfish. Prepared by the Rio Grande Fishes Recovery Team.

Ashton, R. E., Jr., and P. S. Ashton. 1981. Handbook of reptiles and amphibians of Florida. Part One: The Snakes. Windward Publishing Company, Miami, Florida. 176 pp.

McCallum, D.A. 1981. Survey of endangered, threatened, and rare wildlife in the Zuni Mountain Region.

Landye, J.J. 1981. Current status of endangered, threatened, and/or rare mollusks of New Mexico and Arizona. Report to the USDI Fish and Wildlife Service, Office of Rare and Endangered Species, Bureau of Sport Fisheries and Wildlife, Albequerque, New Mexi

Siler, G.J., and C.E. Rogers. 1981. New and interesting distribution records for HELIANTHUS PARADOXUS. Southwestern Naturalist 6(4):431.

Hafner, D.J., K.E. Peterson and T.L. Yates. 1981. Evolutionary relationships of jumping mice (Genus Zapus) of the southwestern United States. J. Mamm., 62(3):501-512.

Schreiber, D. C., and W. L. Minckley. 1981. Feeding interrelationships of native fishes in a Sonoran Desert stream. Great Basin Naturalist 41:409-426.

Hamman, R. L. 1981. Hybridization of three species of chub in a hatchery. Progressive Fish-Culturist 43:140-141.

Procter-Gray, E., and R. T. Holmes. 1981. Adaptive significance of delayed attainment of plumage in male American redstarts: tests of two hypotheses. Evolution 35:742-51.

Hall, G.A. 1981b. Fall migration patterns of wood warblers in the southern Appalachians, USA. Journal of Field Ornithology 52:43-49.

Maurer, B. A., L. B. McArthur, and R. C. Whitmore. 1981. Effects of logging on guild structure of a forest bird community in West Virginia. American Birds 35:11-13.

Dexter, R. W. 1981b. Chimney Swifts reuse ten-year-old nest. North American Bird Bander 6:136-137.

Moulton, M. P., J. R. Choate, S. J. Bissell, and R. A. Nicholson. 1981. Associations of small mammals on the central high plains of eastern Colorado. Southwestern Naturalist 26(1):53-57.

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

Seegmiller, R. F., and R. D. Ohmart. 1981. Ecological relationships of feral burros and desert bighorn sheep. Wildlife Monographs No. 78:1-58.

Passmore, M. F. 1981. Population biology of the Common Ground-Dove and ecological relationships with Mourning and White-winged Doves in south Texas, Ph.D. dissertation, Texas A & M Univ., College Station, Texas. 96pp.

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

Spellenberg, R. 1981. Status Report on Penstemon alamosensis. 21p.

Yonge, K. S. 1981. The breeding cycle and annual production of the common loon (GAVIA IMMER) in the boreal forest region. University of Manitoba, Winnipeg, Manitoba. M.S. thesis.

Henny, C. J. and D. L. Meeker. 1981. An evaluation of blood plasma for monitoring DDE in birds of prey. Env. Pollution. 25A:291-304.

Schmidt, R. 1981. Ferruginous Hawk breeding documented in Sargent County, North Dakota. Prairie Naturalist 13:32.

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.

Titus, J. R., and L. W. VanDruff. 1981. Response of the common loon to recreational pressure in the Boundary Waters Canoe Area, northeastern Minnesota. Wildl. Monogr. No. 79:1-59.

Sepik, G. F., R. B. Owen, Jr., and M. W. Coulter. 1981. A landowner's guide to woodcock management in the Northeast. University of Maine Agricultural Experiment Station Misc. Rep. 253. 23 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.

Stephens, R. 1981. Letter to Major General Alan A. Nord from R. Stephens of US Fish and Wildlife regarding Penstemon alamosensis habitat (7 Oct 1981) with response from A. Nord (16 Oct 1981).

Rosenberg, K.V., J.P. Hubbard, and G.H. Rosenberg. 1981. The winter season: December 1, 1980-February 28, 1981. Southwest region. American Birds. 35(3):325.

Scott, J. A., and S. A. Mattoon. 1981. Early stages of Speyeria nokomis (Nymphalidae). Journal of Research on the Lepidoptera 20:12-15.

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.

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.

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

Allen, O.N. and E.K. Allen. 1981. The Leguminosae: A source book of characteristics, uses and nodulation. The Univ. of Wisconsin Press, Madison, WI.

Whittemore, M. 1981. Chimney swifts and their relatives. Nature Books. 176 pp.

U.S. Fish and Wildlife Service (USFWS). 1981. Plymouth red-bellied turtle recovery plan. U.S. Fish and Wildlife Service, Region 5. 13 pp.

Smith, E. L. 1981. Effects of canoeing on common loon production and survival on the Kenai National Wildlife Refuge, Alaska. Colorado State University, Fort Collins, Colorado. M.S. thesis.

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

Worthington, R. D. 1981. Locations of two populations of Sneed's cactus in the Anthony Gap area. University of Texas. Department of Biological Sciences. El Paso, Texas 79968. 6 pages.

Milburn, T. 1981. STATUS & DISTRIBUTION OF THE LOGGERHEAD SHRIKE, LANIUS LUDOVICIANUS IN THE NORTHEASTERN U.S. UNPUB- LISHED REPORT SUBMITTED TO THE USDI/FWS OFFICE OF ENDANGERED SPECIES. 77 PP.

Hulse, A. C. 1981. Ecology and reproduction of the parthenogenetic lizard Cnemidophorus uniparens (Teiidae). Ann. Carnegie Mus. Nat. Hist. 50:353-369.

Shugart, G. W., M. A. Fitch, and V. M. Shugart. 1981. Minimizing investigator disturbance in observational studiesof colonial birds: access to blind through tunnels. WilsonBull. 93:565-569.