National Wildlife Research Center

NWRC Website

4101 LaPorte Avenue
Fort Collins, CO 80521
tel: (970) 266-6000 fax: (970) 266-6032


The U.S. Department of Agriculture's National Wildlife Research Center (NWRC) is the federal institution devoted to resolving problems caused by the interaction of wild animals and society. The Center applies scientific expertise to the development of practical methods to resolve these problems and to maintain the quality of the environments shared with wildlife.

This site contains publications of the NWRC or its staff. Material prepared by employees of the US Government in the course of their official duties cannot be copyrighted.

2001

Monitoring changes in feral swine abundance and spatial distribution, Richard M. Engeman, Bernice Constantin, Mark Nelson, John Woolard, and Jean Bourassa

MONITORING RACCOON POPULATIONS TO MAXIMIZE EFFICACY OF A FIXED-COST CONTROL BUDGET FOR REDUCING PREDATION ON SEA TURTLE NESTS, Richard M. Engeman, Bernice Constantin, Ryan Noel, and John D. Woolard

Monitoring changes in feral swine abundance and spatial distribution, Richard M. Engeman, Bernice Constantine, Mark Nelson, John Woolard, and Jean Bourassa

Objectives and integrated approaches for the control of brown tree snakes, Richard M. Engeman and Daniel S. Vice

A direct comparison of trapping and spotlight searches for capturing Brown Tree Snakes on Guam, Richard M. Engeman and D.S. Vice

Integrated Management Tactics to Assess Risk and Reduce Damage to Conifer Reforestation by Pocket Gophers, Richard M. Engeman and Gary W. Witmer

EFFECT OF FEEDING STATIONS ON THE HOME RANGES OF AMERICAN BLACK BEARS IN WESTERN WASHINGTON, Philipp Fersterer, Dale L. Nolte, Georg J. Ziegltrum, and Hartmut Gossow

DISEASE EMERGENCE IN BIRDS: CHALLENGES FOR THE TWENTY-FIRST CENTURY, Milton Friend, Robert G. McLean, and F. Joshua Dein

Monitoring of terrestrial carnivore populations, Eric M. Gese

Territorial defense by coyotes (Canis latrans) in Yellowstone National Park, Wyoming: who, how, where, when, and why, Eric M. Gese

THE ROLE OF PREDATION IN WILDLIFE POPULATION DYNAMICS, Eric M. Gese and Frederick F. Knowlton

"References" for Carnivore Conservation, John L. Gittleman, Stephan M. Funk, David Macdonald, Robert K. Wayne, and Eric M. Gese

Estimation of Red-Winged Blackbird Mortality from Toxic Bait Application, James F. Glahn and Michael L. Avery

Design of a Laboratory Secondary Hazard Study, David A. Goldade, Peter J. Savarie, Jerome C. Hurley, Stanley A. Gaddis, and John J. Johnston

Differential responses of coyotes to novel stimuli in familiar and unfamiliar settings, Charles E. Harris and Frederick F. Knowlton

Influence of size of sporocyst inoculum upon the size and number of sarcocysts of Sarcocystis falcatula which develop in the brown-headed cowbird, Melanie P. Hemenway, Michael L. Avery, Pam E. Ginn, Sarah Schaack, John B. Dame, and Ellis C. Greiner

Dogs increase recovery of passerine carcasses in dense vegetation, H. Jeffrey Homan, George M. Linz, and Brian D. Peer

PROGRESS ON CATTAIL MANAGEMENT TO REDUCE BLACKBIRD DAMAGE TO SUNFLOWER, H. Jeffrey Homan, George M. Linz, Ryan L. Wimberly, and Linda B. Penry

Targeting alphas can make coyote control more effective and socially acceptable, Michael M. Jaeger, Karen M. Blejwas, Benjamin N. Sacks, Jennifer C.C. Neale, Mary M. Conner, and Dale R. McCullough

Experimental Infection Of Nontarget Species Of Rodents And Birds With Brucella Abortus Strain Rb51 Vaccine, Matt C. Januszewski, Steven C. Olsen, Robert G. McLean, Larry Clark, and Jack C. Rhyan

Introduction to Pesticides and Wildlife, John J. Johnston

Quantification of plasma and egg 4,4′ dinitrocarbanilide (DNC) residues for the efficient development of a nicarbazin-based contraceptive for pest waterfowl, John J. Johnston, Walter M. Britton, Alexander MacDonald, Thomas M. Primus, Margaret J. Goodall, Christi A. Yoder, Lowell A. Miller, and Kathleen A. Fagerstone

Analysis of Pesticide Gas Cartridges, John J. Johnston, Carol A. Furcolow, Doreen G. Griffin, Randal S. Stahl, and John D. Eisemann

Determination of DiazaCon in Quail Feed and Quail Serum by Ion Pair Reversed-Phase Chromatography, John J. Johnston, Margaret J. Goodall, Jerome C. Hurley, Christi A. Yoder, and Lowell A. Miller

Ecotoxicological Risks of Potential Toxicants for Brown Tree Snake Control on Guam, John J. Johnston, Richard E. Mauldin, Peter J. Savarie, Joseph E. Brooks, and Thomas M. Primus

IMPORTANCE OF BACTERIAL DECOMPOSITION AND CARRION SUBSTRATE TO FORAGING BROWN TREESNAKES, S.M. Jojola-Elverum, J.A. Shivik, and L. Clark

ECOTOXICOLOGY, Ronald J. Kendall, Todd A. Anderson, Robert J. Baker, Catherine M. Bens, James A. Carr, Louis A. Chiodo, George P. Cobb III, Richard L. Dickerson, Kenneth R. Dixon, Lynn T. Frame, Michael J. Hooper, Clyde F. Martin, Scott T. McMurry, Reynaldo Patino, Ernest E. Smith, and Christopher W. Theodorakis

Determination of Cabergoline by Electrospray Ionization Tandem Mass Spectrometry: Picogram Detection via Column Focusing Sample Introduction, Bruce A. Kimball, Thomas J. DeLiberto, and John J. Johnston

Movements and Mortality of American White Pelicans Banded at Marsh Lake, Minnesota, D. Tommy King

Daily Activity Budgets and Population Size of American White Pelicans Wintering in South Louisiana and the Delta Region of Mississippi, D. Tommy King and Scott J. Werner

Using iophenoxic acid injections of prey to identify mammals that feed on them, Frederick F. Knowlton and Stanley R. Olmstead

Serological Responses of Coyotes to Two Commercial Rabies Vaccines, Frederick F. Knowlton, Marianna Roetto, and Deborah Briggs

Pulp cavity-tooth width ratios from known-age and wild-caught coyotes determined by radiography, Frederick F. Knowlton and Susan L. Whittemore

SURVIVAL OF AVIAN CARCASSES AND PHOTOGRAPHIC EVIDENCE OF PREDATORS AND SCAVENGERS, Richard M. Kostecke, George M. Linz, and William J. Bleier

Avian Use of Various Bait Mixtures Offered in Harvested Cornfields during Spring Migration in South Dakota, George M. Linz, H. Jeffrey Homan, and Ryan L. Wimberly

HAS AN INTEGRATED PEST MANAGEMENT APPROACH REDUCED BLACKBIRD DAMAGE TO SUNFLOWER?, George M. Linz, Brian D. Peer, H. Jeffrey Homan, Ryan L. Wimberly, David L. Bergman, William J. Bleier, and Linda B. Penry

HABITAT CHARACTERISTICS AROUND FALL BLACKBIRD ROOSTS, Mark W. Lutman, George M. Linz, and William J. Bleier

Development of Sarcocystis falcatula in its intermediate host, the Brown-headed Cowbird (Molothrus ater), Shannon L. Luznar, Michael L. Avery, John B. Dame, Robert J. MacKay, and Ellis C. Greiner

Chemical Repellents and Other Aversive Strategies in Predation Management, J.R. R. Mason, J.A. Shivik, and M.W. Fall

Effects of Trapping and Subsequent Short-Term Confinement Stress on Plasma Corticosterone in the Brown Treesnake (Boiga irregularis) on Guam, Tom Mathies, Todd A. Felix, and Valentine A. Lance

Case Study 1 : Foliar Insecticide I, Monte Mayes, John D. Eisemann, Alain Baril, Tony Hawkes, Liesbeth Heijink, and Peter Lawlor

PORCINE ZONA PELLUCIDA IMMUNOCONTRACEPTION: LONG-TERM HEALTH EFFECTS ON WHITE-TAILED DEER, Lowell A. Miller, Ken Crane, Stan Gaddis, and Gary J. Killian

PORCINE ZONA PELLUCIDA IMMUNOCONTRACEPTION: LONG-TERM HEALTH EFFECTS ON WHITE-TAILED DEER, Lowell A. Miller, Ken Crane, Stan Gaddis, and Gary J. Killian

BEAR BEHAVIOR IN THE VICINITY OF SUPPLEMENTAL FEEDING STATIONS IN WESTERN WASHINGTON, Dale L. Nolte, Timothy J. Veenendaal, George J. Ziegltrum, and Philipp Fersterer

BEAR BEHAVIOR IN THE VICINITY OF SUPPLEMENTAL FEEDING STATIONS IN WESTERN WASHINGTON, Dale L. Nolte, Timothy J. Veenendaal, Georg J. Ziegltrum, and Philipp Fersterer

Non-Target Impacts of Strychnine Baiting to Reduce Pocket Gopher Populations on Forest Lands in the united States, Dale L. Nolte and Kimberly Wagner

Efficacy of Wolfin to Repel Black-Tailed Deer, Dale L. Nolte and Kimberly K. Wagner

IMPACTS OF SUPPLEMENTAL FEEDING ON THE NUTRITIONAL ECOLOGY OF BLACK BEARS, Steven T. Partridge, Dale L. Nolte, Georg J. Ziegltrum, and Charles T. Robbins

IMPACTS OF SUPPLEMENTAL FEEDING ON THE NUTRITIONAL ECOLOGY OF BLACK BEARS, Steven T. Partridge, Dale L. Nolte, Georg J. Ziegltrum, and Charles T. Robbins

IMPACT OF BLACKBIRD DAMAGE TO SUNFLOWER BIOENERGETIC AND ECONOMIC MODELS, Brian D. Peer, H. Jeffrey Homan, George M. Linz, and William J. Bleier

INFREQUENT COWBIRD PARASITISM ON COMMON GRACKLES REVISITED: NEW RECORDS FROM THE NORTHERN GREAT PLAINS, Brian D. Peer, H. Jeffrey Homan, and Spencer G. Sealy

Density of Prairie Skinks (Eumeces septentrionalis) in Old-field Habitats, William C. Pitt

A New Approach to Understanding Canid Populations Using an Individual-based Computer Model: Preliminary Results, William C. Pitt, Frederick F. Knowlton, and Paul W. Box

Field evaluation of a visual barrier to discourage gull nesting, P. A. Pochop, J.L. Cummings, and R. M. Engeman

Chlorophacinone Residues in Rangeland Rodents: An Assessment of the Potential Risk of Secondary Toxicity to Scavengers, Thomas M. Primus, John D. Eisemann, George H. Matschke, Craig Ramey, and John J. Johnston

Novel Field Sampling Procedure for the Determination of Methiocarb Residues in Surface Waters from Rice Fields, Thomas M. Primus, Dennis J. Kohler, Mike Avery, Pat Bolich, M.O. Way, and John J. Johnston

Determination of 4,4′-Dinitrocarbanilide (DNC), the Active Component of the Antifertility Agent Nicarbazin, in Chicken, Duck, and Goose Plasma, Thomas M. Primus, Dennis J. Kohler, Margaret A. Goodall, Christi Yoder, Doreen Griffin, Lowell A. Miller, and John J. Johnston

PATHOLOGY OF BRUCELLOSIS IN BISON FROM YELLOWSTONE NATIONAL PARK, Jack C. Rhyan, Thomas Gidlewski, Thomas J. Roffe, Keith Aune, L. Michael Philo, and Darla R. Ewalt

USE OF ACETAMINOPHEN FOR LARGE-SCALE CONTROL OF BROWN TREESNAKES, Peter J. Savarie, John A. Shivik, Gary C. White, Jerome C. Hurley, and Larry Clark

USE OF ACETAMINOPHEN FOR LARGE-SCALE CONTROL OF BROWN TREESNAKES, Peter J. Savarie, John A. Shivik, Gary C. White, Jerome C. Hurley, and Larry Clark

LOCAL REMOVAL OF RED-WINGED BLACKBIRDS: POTENTIAL FOR BLACKBIRD MANAGEMENT?, Richard . S. Sawin, George M. Linz, and William J. Bleier

Comparison of Primary and Secondary Repellents for Aversive Conditioning of European Starlings, Roger W. Sayre and Larry Clark

EFFECT OF PRIMARY AND SECONDARY REPELLENTS ON EUROPEAN STARLINGS: AN INITIAL ASSESSMENT, Roger W. Sayre and Larry Clark

EFFECT OF PRIMARY AND SECONDARY REPELLENTS ON EUROPEAN STARLINGS: AN INITIAL ASSESSMENT, Roger W. Sayre and Larry Clark

AVIAN USE OF RIPENING SUNFLOWER FIELDS, Dionn Schaaf, George M. Linz, William J. Bleier, and H. Jeffrey Homan

Evaluation of mirrors to deter nesting starlings, Thomas W. Seamans, Charles D. Lovell, Richard A. Dolbeer, and Jonathon D. Cepek

So You Want to Work with Wolves?, John A. Shivik

The Other Tools For Wolf Management, John A. Shivik

Coyote responses to changing jackrabbit abundance affect sheep predation, L. Charles Stoddart, Richard E. Griffiths, and Frederick F. Knowlton

Comparison of Commercial Deer Repellents, Andy Trent, Dale L. Nolte, and Kimberly Wagner

Inability to Predict Geographic Origin of Yellow-headed Blackbirds, Xanthocephalus xanthocephalus, During Migration, Daniel J. Twedt, George M. Linz, and William J. Bleier

Management of bird and other wildlife hazards at Tribhuvan International Airport, Kathmandu, Nepal, Bashanta Kumar Upadhyaya and Richard A. Dolbeer

Solid Phase Extraction Gas Chromatography/Electron Capture Detector Method for the Determination of Organochlorine Pesticides in Wildlife Whole Blood, S. A. Volz, J. J. Johnston, and D. L. Griffin

Solid Phase Extraction Gas Chromatography/Electron Capture Detector Method for the Determination of Organochlorine Pesticides in Wildlife Whole Blood, S. A. Volz, J.J. Johnston, and D.L. Griffin

Comparison of active ingredients and delivery systems in deer repellents, Kimberly K. Wagner and Dale L. Nolte

Great Egret Preference for Catfish Size Classes, Scott J. Werner, Mark E. Tobin, and Paul B. Fioranelli

Introduced Wildlife of Oregon and Washington , Gary W. Witmer and Jeffrey C. Lewis

Understanding Vole Problems in Direct Seeding — Strategies for Management, Gary W. Witmer and Kurt C. VerCauteren

Understanding Vole Problems in Direct Seeding-Strategies for Management, Gary W. Witmer and Kurt C. VerCauteren

DEALING WITH NUISANCE AND DEPREDATING BLACK BEARS, Gary W. Witmer and Donald G. Whittaker

A review of the hazards and mitigation for airstrikes from Canada geese in the Anchorage, Alaska bowl, Darryl L. York, Richard M. Engeman, John L. Cummings, Corey L. Rossi, and David R. Sinnett

BLACK BEAR FOREST DAMAGE IN WASHINGTON STATE, USA: ECONOMIC, ECOLOGICAL, SOCIAL ASPECTS, Georg J. Ziegltrum and Dale L. Nolte

2000

REPORTING BIAS IN BIRD STRIKES AT JOHN F KENNEDY INTERNATIONAL AIRPORT, NEW YORK, 1979-1998, Scott C. Barras and Richard A. Dolbeer

Ornithological Literature, Robert C. Beason

Lethal Control of Piscivorous Birds at Aquaculture Facilities in the Northeast United States: Effects on Populations, Bradley F. Blackwell, Richard A. Dolbeer, and Laura A. Tyson

Overview of a passive tracking index for monitoring wild canids and associated species, Richard M. Engeman and Lee Allen

Standardizing the evaluation of brown tree snake trap designs, Richard M. Engeman and Daniel S. Vice

Integrated management tactics for predicting and alleviating pocket gopher (Thomomys spp.) damage to conifer reforestation plantings, Richard M. Engeman and Gary W. Witmer

Digestibility, Nitrogen Excretion, and Mean Retention Time by North American Porcupines (Erethizon dorsatum) Consuming Natural Forages, Laura A. Felicetti, Lisa A. Shipley, Gary W. Witmer, and Charles T. Robbins

Captive Great Blue Heron Predation on Farmed Channel Catfish Fingerlings, James F. Glahn, Brian Dorr, and Mark E. Tobin

A Science-Based Initiative to Manage Double-Crested Cormorant Damage to Southern Aquaculture, James F. Glahn, Mark E. Tobin, and Bradley F. Blackwell

Winter Habitat Use and Survival of Female Ring-necked Pheasants (Phasianus colchicus) in Southeastern North Dakota, H. Jeffrey Homan, George M. Linz, and William J. Bleier

Home Ranges and Habitat Selection of White-Tailed Deer in a Suburban Nature Area in Eastern Nebraska, Scott Hygnstrom and Kurt C. VerCauteren

Changes in coyote activity patterns due to reduced exposure to human persecution, Ann M. Kitchen, Eric M. Gese, and Edward R. Schauster

Long-term spatial stability of coyote (Canis latrans) home ranges in southeastern Colorado, Ann M. Kitchen, Eric M. Gese, and Edward R. Schauster

Mechanical Mouse Lure for Brown Treesnakes, Alexandria C. Lindberg, John A. Shivik, and Larry Clark

Immunocontraception of White-Tailed Deer with GnRH Vaccine, Lowell A. Miller, Brad E. Johns, and Gary J. Killian

Strychnine Alkaloid and Avian Reproduction: Effects Occur at Lower Dietary Concentrations with Mallard Ducks Than with Bobwhite Quail, C. A. Pedersen, R. T. Sterner, and M. J. Goodall

Roles of odor, taste, and toxicity in the food preferences of lambs: implications for mimicry in plants, Frederick D. Provenza, Bruce A. Kimball, and Juan J. Villalba

Seasonal variability in brown tree snake (Boiga irregularis) response to lures, John A. Shivik, William G. Wright, and Larry Clark