- Adams, L.W.; Geis, A.D., 1981, Roads and roadside habitat in relation to small mammal distribution and abundance: Electric Power Research Institute , various pagings, Book chapter
- Anderson, D. P.; Dixon, O. W., 1981, Fish biologics: antisera for fish disease diagnosis: Kellas Press , p. 412-424, Book chapter
- Anderson, D. P.; Merchant, B.; Dixon, O. W.; Schott C, Lizzio, E. F., 1981, Immune response of trout to DNP conjugated to KLH, ficoll, or an O-antigen given by injection or flush contact: , 975 p., Abstract or summary
- Anderson, S.H.; Robbins, C.S.; Partelow, J.R., 1981, Synthesis and Evaluation of Avian Population and Habitat Data for West Virginia: U.S. Fish and Wildlife Service , viii, 345, Book
- Anderson, S.H.; Robbins, C.S.; Partelow, J.R., 1981, Synthesis and Evaluation of Avian Populations and Habitat Data for Alabama: U.S. Fish and Wildlife Service , vi, 397, Book
- Anderson, S.H.; Robbins, C.S.; Partelow, J.R.; Weske, J.S., 1981, Synthesis and Evaluation of Avian Populations and Habitat Data for Pennsylvania: U.S. Fish and Wildlife Service , viii, 407, Book
- Bauer, O. N.; Egusa, S.; Hoffman, G. L., 1981, Parasitic infections of economic importance in fishes: DWN Polish Scientific Publishers , p. 425-443, Book chapter
- Beyer, W.N., 1981, Metals and terrestrial earthworms (Annelida: Oligochaeta): Beech Leaf Press , xxv, 315, Book chapter
- Bystrak, D., 1981, The North American Breeding Bird Survey: Cooper Ornithological Society, Allen Press Studies in Avian Biology 6, x, 630, Book chapter
- Carpenter, J.W.; Derrickson, S.R., 1981, The role of captive propagation in preserving endangered species: Georgia Department of Natural Resources, Game and Fish Division. Technical Bulletin , 179, Book chapter
- Carpenter, J.W.; Novilla, M.N.; Kaiser, H.E., 1981, Neoplasia and other disease problems in black-footed ferrets: Implications for an endangered species: Williams and Wilkins , xxxii, 908, Book chapter
- Coghlan, M.; Madej, M. A., 1981, Main channel response to increased sediment supply, upper Redwood Creek, California: , p. 858, Abstract or summary
- Coon, R.A., 1981, Newsletter for the Accelerated Research Program for migratory shore and upland game birds: U.S. Fish and Wildlife Service, Migratory Bird & Habitat Research Laboratory Newsletter for the Accelerated Research Program for migratory shore and upland game birds No. 6., 33, Organization Series
- Coon, R.A.; Dwyer, T.J., 1981, A funding source for sandhill crane research: The Accelerated Research Program for Migratory Shore and Upland Game Birds: National Audubon Society , viii, 296, Book chapter
- Crawford, W.; Sarson, R.; Wiemeyer, S. N.; Geddes, G.; Dunstan, T., 1981, Methods for keeping birds in captivity. [Panel discussion]: Eagle Valley Environmentalists, Inc. Eagle Valley Environmentalists Technical Report , 248, Book chapter
- Dawson, D.K., 1981, Sampling in rugged terrain: Cooper Ornithological Society Studies in Avian Biology 6, x, 630, Book chapter
- Dixon, O. W.; Anderson, D. P., 1981, Fish biologics at the National Fish Health Research Laboratory: , p. 219-224, Book chapter
- Dupree, H. K., 1981, An overview of the various techniques to control infectious diseases in water supplies and in water reuse aquacultural systems: American Fisheries Society, Fish Culture Section , p. 85-89, Book chapter
- Ellis, D.H., 1981, Responses of Raptorial Birds to Low Level Military Jets and Sonic Booms: Results of the 1980-1981 Joint U.S. Air Force-U.S. Fish and Wildlife Service Study: Institute for Raptor Studies , 59, Book
- Erickson, R.C.; Derrickson, S.R., 1981, The whooping crane: International Crane Foundation , 259, Book chapter
- Erwin, R.M., 1981, Birds: Committee to Preserve Assateague Island, Inc. , iv, 110, Book chapter
- Estes, J. A., 1981, Carnivorous mammals: the case of the sea otter: Academic Press Book chapter
- Faanes, C. A.; Bystrak, D., 1981, Estimating numbers of terrestrial birds: 6, p. 353-359, Monograph
- Faanes, C.A.; Bystrak, D., 1981, The role of observer bias in the North American Breeding Bird Survey: Cooper Ornithological Society Studies in Avian Biology 6, x, 630, Book chapter
- Fisher, L. E.; Hartman, J.; Howell, J. A.; Busch, D., 1981, A survey for wintering and migrating bald eagles and critical habitat in the Lower Missouri Region, Colorado, Kansas, Nebraska, and Wyoming: LMR , 161 p., Report
- Fitzmayer, K. M.; Van Den Avyle, M. J.; Geiger, J. G., 1981, Chronic effects of simazine on Daphnia pulex: , p. 79-80, Abstract or summary
- Fitzmayer, Karen Marie, 1981, Effects of simazine on Daphnia pulex and larval striped bass: Tennessee Technological University , 66 p., Thesis
- Fritts, S.H.;Mech, L.D., 1981, Dynamics, movements, and feeding ecology of a newly protected wolf population in northwestern Minnesota: The Wildlife Society Wildlife Monographs No. 80, 79, Monograph
- Fuller, M.R.; Mosher, J.A., 1981, Methods of detecting and counting raptors: A review: Cooper Ornithological Society Studies in Avian Biology 6, x, 630, Book chapter
- Gee, G.F., 1981, A workshop in artificial insemination of non-domestic birds: , 19, Book chapter
- Geis, A.D., 1981, Management and research opportunities with urban wildlife: Georgia Department of Natural Resources, Game and Fish Division Technical Bulletin , 179, Book chapter
- Geissler, P.H., 1981, [Comments on] ‘A windshield and multivariate approach to the classification, inventory, and evaluation of wildlife habitat: An exploratory study,‘ by C.E. Grue, R.R. Reid, and N.J. Silvy: U.S. Forest Service. General Technical Report , 249, Book chapter
- Geissler, P.H.; Noon, B.R., 1981, Estimates of avian population trends from the North American Breeding Bird Survey: Cooper Ornithological Society Studies in Avian Biology 6, x, 630, Book chapter
- Giudice, J. J.; Gray, D. L.; Martin, J. M.,, 1981, Manual for baitfish culture in the south: U.S. Fish and Wildlife Service and the University of Arkansas Cooperative Extension Service Book
- Grue, C.E.; Christian, C.L., 1981, Use of captive starlings to determine effects of pollutants on passerine reproduction: American Society for Testing and Materials ASTM Special Technical Publication 757, 164, Book chapter
- Grue, C.E.; Shipley, B.J., 1981, Interpreting population estimates of birds following pesticide applications--behavior of male starlings exposed to an organophosphate pesticide: Studies in Avian Biology , x, 630, Book chapter
- Haseltine, S.; Peterle, T.; Nagode, L.; Parsons, A.; Lustick, S., 1981, Physiology of the eggshell thinning response to DDE: Direccao-Geral dos Recursos Florestais Servico de Inspeccao da Caca e Pesca , 353, Book chapter
- Heinz, G.H.; Johnson, R.W., 1981, Diagnostic brain residues of dieldrin: Some new insights: American Society for Testing and Materials ASTM Special Technical Publication 757, 164, Book chapter
- Henny, C.J.; Blus, L.J.; Gregory, S.V.; Stafford, C.J., 1981, PCBs and organochlorine pesticides in wild mink and river otters from Oregon: Worldwide Furbearer Conference, Inc. , xvii, 2056, Book chapter
- Hill, E.F., 1981, Inorganic and organic mercury chloride toxicity to Coturnix: sensitivity related to age and quantal assessment of physiologic responses: Ph.D. Dissertation, University of Maryland , ix, 221, Book
- Hornor, N.; Howell, J. A.; Wong, K., 1981, Environmental Assessment: Activities Proposed by the San Francisco Clean Water Program at Ocean Beach, Golden Gate National Recreation Area: National Park Service, Golden Gate NRA , 51 p., Report
- Jackson, G. A.; Korschgen, C. E.; Thiel, P. A.; Besser, J., 1981, A long-term resource monitoring plan for the Upper Mississippi River System: Upper Missouri River Basin Commission Report
- Jennings, M. R., 1981, Parasites of chinook salmon (Oncorhynchus tshawytscha) and coho salmon (Oncorhynchus kisutch) from the Mad River and vicinity, Humboldt County, California: Humboldt State University , x, 90 p., Thesis
- Johnson, D. H., 1981, Summarizing remarks: estimating relative abundance (Part I): , p. 58-59 [630 pp.], Book chapter
- Johnson, D. H., 1981, Improved population estimates through the use of auxiliary information: , p. 436-440 [630 pp.], Book chapter
- Kelsey, H. M.; Madej, M. A.; Pitlick, J.; Coghlan, M.; Best, D.; Belding, R.; Stroud, P., 1981, Sediment sources and sediment transport in the Redwood Creek basin: A Progress Report: National Park Service, Redwood National Park Technical Report 3, 114 p., Report
- Kelsey, H. M.; Madej, M. A.; Pitlick, J.; Stroud, P.; Coghlan, M., 1981, Major sediment sources and limits to the effectiveness of erosion control techniques in the highly erosive watersheds of north coastal California: International Association of Hydrological Sciences Publication 132, p. 493-510, Organization Series
- Kepler, C.B., 1981, Introductory Remarks: Species variability: Studies in Avian Biology , x, 630, Book chapter
- Kepler, C.B.; Scott, J.M., 1981, Reducing bird count variability by training observers: Studies in Avian Biology , x, 630, Book chapter
- Krapu, G. L., 1981, The Platte River Ecology Study: special research report: U.S. Fish and Wildlife Service; U.S. Geological Survey, Northern Prairie Wildlife Research Center , 187 pp., Report
- Lawler, G.C.; Holmes, J.P.; Adamkiewicz, D.M.; Shields, M.I.; Monnat, J.Y.; Laseter, J.L., 1981, Characterization of petroleum hydrocarbons in tissues of birds killed in the Amoco Cadiz oil spill: Centre National Pour L'Exploitation des Oceans , vi, 881, Book chapter
- Leslie, D. M., Jr.; Douglas, C. L., 1981, Status of population modeling of the River Mountain herd: Book chapter
- Lidgerding, B. C., 1981, Cell lines used for the production of viral fish disease agents: , p. 233-241, Book chapter
- Mac, Michael J., 1981, Vulnerability of young lake trout to predation after chronic exposure to PCB‘s and DDE: Technical Paper 105, p. 29-32, Book chapter
- Marking, L. L.; Dawson, V. K.; Allen, J. L.; Bills, T. D.; Rach, J. J., 1981, Biological activity and chemical characteristics of dredge material from ten sites on the upper Mississippi River: U.S. Fish and Wildlife Service , 146, Report
- McAllister, P. E., 1981, Summaries and conclusions : Session I : Viruses: , p. 465-466, Book chapter
- McDaniel, D. W., 1981, Bio-engineering and facility design: American Fisheries Society, Fish Culture Section , p. 190-191, Book chapter
- McEachern, K., 1981, Dave Johnston Mine reclamation report: NERCO, Inc. Report
- McEachern, K., 1981, Antelope Creek alluvial valley floor assessment: NERCO, Inc. Report
- Medica, P. A.; Lyons, C. L.; Turner, F. B., 1981, A comparison of populations of desert tortoises, Gopherus agassizii in grazed and ungrazed areas in Ivanpah Valley, California: , 60 p., Report
- Medica, P. A.; O'Farrell, T. P.; Collins, E., 1981, Survey of Yucca Mountain, Forty-Mile Canyon, and Jackass Flats in Nye County, Nevada, for desert tortoise, Gopherus agassizii: , p. 1-10, Report
- Miller, W. Roger, 1981, Water resources of the southern Powder River area, southeastern Montana: Montana Bureau of Mines and Geology Memoir 47, vi, 53 p., Organization Series
- Morrison, M.L.; Mannan, R.W.; Dorsey, G.L., 1981, Effects of number of circular plots on estimates of avian density and species richness: Studies in Avian Biology , x, 630, Book chapter
- Nelson, M.E.;Mech, L.D., 1981, Deer social organization and wolf predation in northeastern Minnesota: The Wildlife Society Wildlife Monographs No. 77, 53, Monograph
- Nichols, J.D.; Noon, B.R.; Stokes, S.L.; Hines, J.E., 1981, Remarks on the use of mark-recapture methodology in estimating avian population size: Studies in Avian Biology , x, 630, Book chapter
- Noon, B.R., 1981, Techniques for sampling avian habitats: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station General Technical Report , 249, Book chapter
- O'Shea, T.J.; Kaiser, T.E.; Askins, G.R.; Chapman, J.A., 1981, Polychlorinated biphenyls in a wild mink population: Worldwide Furbearer Conference, Inc. , xvii, 2056, Book chapter
- Parker, N. C., 1981, An air-operated fish culture system with water-reuse and subsurface silos: American Fisheries Society, Fish Culture Section , p. 131-137, Book chapter
- Parker, N. C., 1981, Considerations for selecting fish production facilities: American Fisheries Society, Fish Culture Section , p. 238-239, Book chapter
- Parker, N. C., 1981, Requirements of warmwater fish: American Fisheries Society, Fish Culture Section , p. 21-28, Book chapter
- Ramsey, F.L.; Scott, J.M., 1981, Tests of hearing ability: Studies in Avian Biology , x, 630, Book chapter
- Ramsey, F.L.; Scott, J.M., 1981, Analysis of bird survey data using a modification of Emlen‘s method: Studies in Avian Biology , x, 630, Book chapter
- Rathbun, G. B., 1981, Ecology of the golden-rumped elephant-shrew (Rhynchocyon chrysopygus) of Kenya: , p. 573-578, Report
- Robbins, C.S., 1981, Reappraisal of the Winter Bird-Population Study technique: Studies in Avian Biology , x, 630, Book chapter
- Robbins, C.S., 1981, Bird activity levels related to weather: Studies in Avian Biology , x, 630, Book chapter
- Robbins, C.S., 1981, Effect of time of day on bird activity: Studies in Avian Biology , x, 630, Book chapter
- Robbins, C.S.; Stallcup, R.W., 1981, Problems in separating species with similar habits and vocalizations: Studies in Avian Biology , x, 630, Book chapter
- Rumsey, G. L., Garling, D.L., Jr., Halver, J. E., Poston, H. A., Slinger, S. J., Windell, J. T., 1981, Nutrient requirements of coldwater fishes: National Academy Press Book
- Scott, J.M.; Ralph, C.J., 1981, Introduction: Studies in Avian Biology , x, 630, Book chapter
- Scott, J.M.; Ramsey, F.L., 1981, Length of count period as a possible source of bias in estimating bird densities: Studies in Avian Biology , x, 630, Book chapter
- Scott, J.M.; Ramsey, F.L.; Kepler, C.B., 1981, Distance estimation as a variable in estimating bird numbers from vocalizations: Studies in Avian Biology , x, 630, Book chapter
- Serafin, J.A., 1981, Nutritionally-related diseases of captive-reared cranes and ratites: Cornell University , 131, Book chapter
- Simon, R. C.; Schill, W. B.; Kincaid, H. L., 1981, Causes and importance of genetic differences between groups of test fish: , p. 267-272, Book chapter
- Sincock, J.L., 1981, Saving the Newell‘s shearwater: U.S. Forest Service , 88, Book chapter
- Smith, R. R., 1981, Application to aquatic animals: National Academy Press , p. 41-43, Book chapter
- Smith, R. R., 1981, Energy metabolism in fishes: Alan R. Liss , p. 945-953, Book chapter
- Stafford, C.J.; Stickel, W.H., 1981, Formalin preservation of avian blood for organochlorine analysis: American Society for Testing and Materials ASTM Special Technical Publication 757, 164, Book chapter
- Stromborg, K.L., 1981, Reproductive tests of diazinon on bobwhite quail: American Society for Testing and Materials ASTM Special Technical Publication 757Book chapter
- Weaver, W.; Madej, M. A., 1981, Erosion control techniques used in Redwood National Park, northern California, 1978-1979: International Association of Hydrological Sciences Publication 132, p. 640-645, Organization Series
- Wharton, C. H.; Lambou, V. W.; Newsom, J.; Winger, P. V.; Gaddy, L. L.; Mancke, R., 1981, The fauna of bottomland hardwoods in southeastern United States: Elsevier Scientific Publishing Co. , xviii, 401 p., Book chapter
- Whitcomb, R.F.; Robbins, C.S.; Lynch, J.F.; Whitcomb, B.L.; Klimkiewicz, M.K.; Bystrak, D., 1981, Effects of forest fragmentation on avifauna of the eastern deciduous forest: Springer-Verlag Ecological Studies 41, xvii, 310, Book chapter
- Wiemeyer, S. N., 1981, Propagation of bald eagles and introduction of eggs and eaglets into the wild, 1976-1980: Eagle Valley Environmentalists, Inc. Eagle Valley Environmentalists Technical Report , 248, Book chapter
- Wiley, J.W., 1981, The Puerto Rican parrot (Amazona vittata): Its decline and the program for its conservation: Smithsonian Institution Press for the International Council for Bird Preservation ICBP Technical Publication 1, xiii, 485, Book chapter
- Williams, B.K., 1981, Discriminant analysis in wildlife research: Theory and applications: U.S. Forest Service. General Technical Report , 249, Book chapter
- Winger, P. V., 1981, Physical and chemical characteristics of warmwater streams: A review: Southern Division, American Fisheries Society , 422, Book chapter
- Wolf, K., 1981, Viral diseases of fish and their relation to public health: CRC (Chemical Rubber Company) Press, Inc. , p. 403-437, Book chapter
