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Presentations by Lawrence D. Igl


Igl, L. D., and D. H. Johnson. August 2012. Total-area counts versus point counts for surveying breeding birds in grasslands. North American Ornithological Conference, Vancouver, British Columbia, Canada.

Hahn, C., L. D. Igl, J. W. Burnett, and G. F. Erf. February 2012. Evolution of immune system: enhanced maternal immune investment in eggs of avian brood parasites. Biology2012: Joint meeting of the Swiss Zoological Society, Swiss Systematics Society, Swiss Botanical Society, and Society for Conservation Biology, Fribourg, Switzerland.

Hahn, D. C., L. D. Igl (presenter), J. W. Burnett, and G. F. Erf. February 2012. Enhanced immunity in the eggs of an obligate avian brood parasite, the Brown-headed Cowbird. Joint meeting of the North Dakota and Minnesota Chapters of the Wildlife Society, Fargo, North Dakota. (Poster)

Hahn, D. C., L. Igl, J. Burnett, and G. Erf. January 2012. Evidence of parasite-mediated selection favoring evolution of more effective immune defenses: more immune constituents in eggs of avian brood parasites. Annual meeting of the Society for Integrative and Comparative Biology (with the American Microscopical Society, Animal Behavior Society, and The Crustacean Society), Charleston, South Carolina.

Hahn, C., G. Erf, L. Igl, and J. Burnett. August 2011. Collateral adaptations of parasites are often overlooked: enhanced immunity of avian brood parasites. The 13th Congress of the European Society for Evolutionary Biology, Eberhard Karls Universität Tübingen, Tübingen, Germany.

Igl, L. D., and D. H. Johnson. August 2011. Grassland bird use of Conservation Reserve Program fields in the Great Plains and Interior Lowlands: A long-term, regional perspective. Annual meeting of the Central Mountains and Plains Section of The Wildlife Society, Scotts Bluff, Nebraska. (Invited presentation)

Igl, L. D. August 2011. Phenological changes on the prairie: Long-term trends in spring arrival dates of migratory waterfowl and other birds in south-central North Dakota. America's Grasslands Conference: Status, Threats, and Opportunities (Sponsored by the National Wildlife Federation and Ducks Unlimited), Sioux Falls, South Dakota.

Igl, L. D., and D. H. Johnson. August 2011. Grassland bird use of Conservation Reserve Program fields in the Great Plains and Interior Lowlands: A long-term, regional perspective. America's Grasslands Conference: Status, Threats, and Opportunities (Sponsored by the National Wildlife Federation and Ducks Unlimited), Sioux Falls, South Dakota.

Igl, L. D., and D. H. Johnson. July 2011. Short- and long-term effects of haying on breeding birds in CRP grasslands in the Northern Great Plains. Annual meeting of the Soil and Water Conservation Society, Washington, D.C. (Invited presentation).

Hahn, D. C., L. D. Igl, G. Erf, and J. Burnett. July 2011. Parental care by an avian brood parasite: provisioning offspring with enhanced immune defenses. Behavior 2011. Joint meeting of the Animal Behavior Society and the International Ethological Conference. Indiana University, Bloomington, Indiana. (Poster)

Hahn, D. C., G. Erf, J. Burnett, and L. Igl. February 2011. Enhanced immunity: an unexpected consequence of conflict between avian brood parasites and their hosts. Topical meeting of The Ethological Society (Ethologische Gesellschaft) on Cooperation and Conflict, University of Zürich, Zürich, Switzerland.

Igl, L. D. February 2011. Evaluation of breeding birds on Native Prairie Adaptive Management Units. Third Annual Cooperators Meeting of the Native Prairie Adaptive Management Project, Jamestown, North Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. February 2011. Management of CRP grasslands: short- and long-term effects of haying on breeding bird populations in CRP grasslands in the northern Great Plains. Annual meeting of the Society for Range Management, Billings, Montana. (Invited presentation)

Igl, L. D., and D. H. Johnson. August 2010. Home on the Range: patterns of habitat use by male and female Brown-headed Cowbirds in their historical breeding range. North American Prairie Conference, Cedar Falls, Iowa.

Igl, L. D., and D. H. Johnson. August 2010. To hay or not to hay: short- and long-term effects of haying on breeding bird populations in CRP grasslands in the northern Great Plains. North American Prairie Conference, Cedar Falls, Iowa.

Igl, L. D., and D. H. Johnson. July 2010. Grassland bird use of Conservation Reserve Program fields in the Great Plains and Interior Lowlands: a long-term, regional perspective. Grassland Bird Workshop, U.S. Fish and Wildlife Service, Morris, Minnesota. (Invited presentation)

Johnson, D. H., B. E. Jamison, and L. D. Igl. July 2010. Effects on breeding birds of native versus introduced species in planted grasslands. Grassland Bird Workshop, U.S. Fish and Wildlife Service, Morris, Minnesota. (Invited presentation)

Igl, L. D., and D. H. Johnson. March 2010. Managing CRP grasslands: Long- and short-term responses of breeding birds in the northern Great Plains. Soil and Range Sciences Seminar Series, North Dakota State University, School of Natural Resource Sciences, Fargo, North Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. February 2010. The total-area count as an alternative method to survey breeding birds in grasslands. Annual meeting of the North Dakota Chapter of The Wildlife Society, Mandan, North Dakota.

Martin, R. E., L. D. Igl, and D. N. Svingen. February 2010. An update of the checklist of North Dakota birds. Annual meeting of the North Dakota Chapter of The Wildlife Society, Mandan, North Dakota.

Igl, L. D., and D. H. Johnson. September 2009. Management of CRP grasslands: long- and short-term responses of breeding birds to haying in the northern Great Plains. Annual meeting of The Wildlife Society, Monterey, California.

Igl, L. D. April 2009. Breeding bird use of grasslands enrolled in the Conservation Reserve Program in northern Great Plains. North Dakota State University, Department of Biological Sciences, Fargo, North Dakota. (Invited presentation)

Igl, L. D. April 2009. Plastic Ducks and Rigid Shorebirds: Are waterfowl and other migratory birds arriving earlier in North Dakota in spring? Bismarck-Mandan Bird Club, Bismarck, North Dakota. (Invited presentation)

Sovada, M. A., P. J. Pietz, and L. D. Igl. March 2009. Disease, climate change, and predators threaten breeding populations of the American White Pelican. Weber State University, Ogden, Utah. (Invited presentation)

Igl, L. D., and D. H. Johnson. February 2009. Long- and short-term responses of breeding birds to haying of Conservation Reserve Program grasslands in the northern Great Plains. Annual meeting of the North Dakota Chapter of The Wildlife Society, Mandan, North Dakota.

Igl, L. D., and D. H. Johnson. February 2009. Field of Dreams: An unusually large population of yellow lady’s slippers in a CRP field in central North Dakota, 2001-2008. Annual meeting of the North Dakota Chapter of The Wildlife Society, Mandan, North Dakota. (Poster)

Sovada, M. A., P. J. Pietz, L. D. Igl, A. J. Bartos, and D. T. King. November 2008. Weather and West Nile Virus impact on American White Pelican productivity. Annual meeting of The Waterbird Society, South Padre Island, Texas. (Invited presentation)

Igl, L. D., and D. H. Johnson. September 2008. The foresting of America's heartland: how competing conservation strategies affect grassland bird populations. Great Plains Riparian Forest Management Summit (Sponsored by U.S. Forest Service, USDA Natural Resources Conservation Service, South Dakota Resource Conservation and Forestry, and Kansas Forest Service), Sioux Falls, South Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. August 2008. Long- and short-term responses of breeding birds to haying of Conservation Reserve Program grasslands in the northern Great Plains. Joint meeting of the American Ornithologists’ Union, the Cooper’s Ornithological Society, and the Canadian Society of Ornithologists, Portland, Oregon.

Igl, L. D. June 2008. The Early Bird: Are migratory birds arriving earlier in spring in south-central North Dakota? Prairie and Potholes Birding Festival, Birding Drives Dakota, Jamestown, North Dakota. (Invited Poster)

Johnson, D. H., L. D. Igl, M. Winter, M. A. Cunningham, J. A. Shaffer, and D. Svedarski. June 2008. Habitat fragmentation effects on grassland birds. U.S. Department of Agriculture, Forest Service, National Grassland Managers Workshop, Fargo, North Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. April 2008. The foresting of America’s heartland: competing conservation strategies in North American grasslands. Annual meeting of the Minnesota Prairie Chicken Society, Rothsay, Minnesota. (Invited presentation)

Igl, L. D., and D. H. Johnson. February 2008. The foresting of America’s heartland: competing conservation strategies in North American grasslands. Annual meeting of the North Dakota Chapter of The Wildlife Society, Grand Forks, North Dakota.

Johnson, D. H., L. D. Igl, M. Winter, and M. A. Cunningham. February 2008. Habitat fragmentation: fact and fiction. Annual meeting of the North Dakota Chapter of The Wildlife Society, Grand Forks, North Dakota.

Igl, L. D. April 2007. Plastic Ducks: Are waterfowl arriving earlier in North Dakota in spring? Tenth annual meeting of the Minnesota Waterfowl Association, Bloomington, Minnesota. (Invited Poster)

Johnson, D. H., and L. D. Igl. September 2006. Changes in grassland bird use of Conservation Reserve Program fields in the Great Plains: we mustn't stop learning. Annual meeting of The Wildlife Society, Anchorage, Alaska. (Invited presentation)

Igl, L. D. August 2006. Plastic Ducks: Are waterfowl arriving earlier in North Dakota in spring? Fourth North American Duck Symposium, Bismarck, North Dakota. (Poster)

Igl, L. D., and D. H. Johnson. July 2006. Changes in breeding bird populations in the Platte River Valley of Central Nebraska: 1979-1980 to 2001. Twentieth North American Prairie Conference, University of Nebraska, Kearney, Nebraska.

Igl, L. D., and D. H. Johnson. July 2006. Habitats of grassland breeding birds in North Dakota: 1967 and 1992-93. Twentieth North American Prairie Conference, University of Nebraska, Kearney, Nebraska.

Igl, L. D. April 2006. The early bird: long-term trends in spring arrival dates of migratory birds in south central North Dakota. Department of Biological Sciences, North Dakota State University, Fargo, North Dakota. (Contributed)

Igl, L. D., and D. H. Johnson. September 2005. The foresting of America's heartland: how competing conservation strategies affect grassland bird populations. Annual meeting of The Wildlife Society, Madison, Wisconsin. (Invited presentation)

Johnson, D. H., L. D. Igl, and J. A. Shaffer. March 2005. Recreated grasslands, restored wetlands, and renewable energy: the response of breeding birds to anthropogenic activities in South Dakota. Annual meeting of the South Dakota Academy of Science, Sioux Falls, South Dakota. (Invited presentation)

Igl, L. D. February 2005. Phenological adaptability: are migratory birds arriving earlier in the spring in North Dakota and should managers and biologists be concerned? Annual meeting of the North Dakota Chapter of the Wildlife Society, Mandan, North Dakota.

Winter, M., D. H. Johnson, L. D. Igl., and M. T. Murphy. December 2004. Conservation Reserve Program: a useful tool to preserve North American grassland birds? International Symposium on the Ecology and Conservation of Steppe-land Birds, Universitat de Lleida, Lleida, Spain. (Invited presentation)

Johnson, D. H., and L. D. Igl (presenter). July 2004. CRP values for nongame birds. Annual meeting of the Midwest Association of Fish and Wildlife Agencies, Washburn, North Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. November 2003. Grassland breeding birds in the northern Great Plains: a long-term, large-scale evaluation of a long-term, large-scale cropland retirement program. Annual meeting of the Northern Plains Biological Symposium, Fargo, North Dakota.

Igl, L. D., and D. H. Johnson. August 2003. Changes in breeding bird populations in the Platte River Valley of Nebraska: 1979-80 to 2001. Annual Meeting of the American Ornithologists’Union, Champaign-Urbana, Illinois.

Johnson, D. H., J. A. Shaffer, and L. D. Igl. July 2003. Birds at the interface: how wetland birds depend on grasslands. Annual meeting of the Society for Conservation Biology, Duluth, Minnesota.

Jamison, B. E., D. H. Johnson, and L. D. Igl. February 2003. Effects of seeding mixtures on breeding bird use of restored grasslands. Joint meeting of The North Dakota Chapter of The Wildlife Society and the Dakota Chapter of The American Fisheries Society, Bismarck, North Dakota.

Jamison, B. E., D. H. Johnson, and L. D. Igl. September 2002. Effects of seeding mixture composition on breeding bird use of planted grasslands in the northern Great Plains. Annual meeting of The Wildlife Society, Bismarck, North Dakota.

Igl, L. D., and D. H. Johnson. May 2002. The foresting of America's heartland and the proliferation of birds associated with trees and shrubs in North Dakota. Northwestern North Dakota Ornithological Conference, Minot, North Dakota. (Invited presentation)

Igl, L. D. 5 April 2002. Sleeping with the enemy: patterns of cowbird parasitism and habitat use in the northern Great Plains. Monthly meeting of the Bismarck-Mandan Bird Club, Bismarck, North Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. March 2002. History does repeat itself: evaluating population changes by revisiting historic bird surveys. The third international Partners in Flight conference: A workshop on bird conservation, implementation, and integration, Monterey, California.

Igl, L. D., and D. H. Johnson. February 2002. Home on the range: patterns of cowbird parasitism and habitat use in the northern Great Plains. Annual meeting of the North Dakota Chapter of the Wildlife Society, Grand Forks, North Dakota.

Hahn, D. C., M. A. Ottinger, and L. D. Igl. August 2001. Role of maternal testosterone in competitive growth and behavior of parasitic cowbird offspring. Annual meeting of the American Ornithologists’ Union, Seattle, Washington. (Poster)

Dechant, J. A., D. H. Johnson, C. M. Goldade, and L. D. Igl. April 2001. Responses of grassland birds to management practices: lessons from the literature. Annual meeting of the North Dakota Academy of Science, Bismarck, North Dakota.

Johnson, D. H., L. D. Igl, and M. D. Schwartz. April 2001. Dynamics of populations of grassland birds. Symposium (Grassland bird ecology and management, organized by J. Kelly and M. Desmond). Annual meeting of the Cooper Ornithological Society, Albuquerque, New Mexico. (Invited presentation)

Igl, L. D., D. H. Johnson, and H. A. Kantrud. December 2000. Grassland birds in North Dakota: have densities within habitats changed? Midwest Fish and Wildlife Conference, Minneapolis, Minnesota.

L. D. Igl (presented for D. H. Johnson). October 2000. The effects of leafy spurge infestation on breeding birds of the Sheyenne National Grassland, ND. Annual meeting of Team Leafy Spurge, Rapid City, South Dakota.

Igl, L. D. August 1999. Grassland bird issues. Waterfowl Ecology and Management Course, U.S. Fish and Wildlife Service, Fergus Falls, Minnesota. (Invited presentation)

Johnson, D. H., J. A. Dechant, L. D. Igl, M. B. Whitt, M. Hartman, and S. Anderson. 14 August 1999. Habitat and landscape effects on wetland bird densities in North Dakota and South Dakota. Annual meeting of the American Ornithologists’ Union, Cornell University, Ithaca, New York.

Johnson, D. H., J. A. Dechant, L. D. Igl, M. B. Whitt, M. R. Hartman, and S. Anderson. September 1999. Wetland bird communities in North Dakota and South Dakota. Annual Meeting of The Wildlife Society, Austin, Texas.

Johnson, D. H., J. A. Dechant (presenter), M. B. Whitt, M. R. Hartman, S. Anderson, and L. D. Igl. February 1999. Wetland Bird Communities in the Dakotas. Annual meeting of The North Dakota Chapter of The Wildlife Society, Mandan, North Dakota.

Johnson, D. H., L. D Igl, and M. D. Schwartz. December 1998. Grassland Birds and the Conservation Reserve Program: Prospects for the Future. Annual meeting of the Midwest Fish and Wildlife Conference, Cincinnati, Ohio.

Johnson, D. H, L. D Igl, and M. D. Schwartz. August 1998. Effects of haying Conservation Reserve Program fields on breeding birds. Annual meeting of the Ecological Society of America, Baltimore, Maryland.

Igl, L. D., and D. H. Johnson. April 1998. Brown headed Cowbirds in grasslands established by the Conservation Reserve Program in the northern Great Plains. Second North American Ornithological Conference, St. Louis, Missouri. (Contributed)

Igl, L. D., and D. H. Johnson. February 1998. Le Conte's Sparrow: ephemeral jewel of the northern Great Plains. Joint meeting of the North Dakota and Minnesota Chapters of the Wildlife Society, Fargo, North Dakota.

Johnson, D. H., L. D Igl, and M. D. Schwartz. February 1998. Effects of haying Conservation Reserve Program fields on breeding birds. Joint meeting of the North Dakota and Minnesota Chapters of the Wildlife Society, Fargo, North Dakota.

Igl, L. D. October 1997. Grazing effects on grassland birds in the Little Missouri National Grasslands. Little Missouri Working Group, U.S. Forest Service, Dickinson, North Dakota. (Invited presentation)

Igl, L. D. April 1997. What makes a grassland bird a grassland bird? Annual meeting of The Montana Audubon, Billings, Montana. (Invited presentation)

Igl, L. D., and B. M. Ballard. April 1997. Habitat use of migrating and wintering grassland birds in southern Texas. Annual meeting of the Wilson Ornithological Society, Manhattan, Kansas.

Johnson, D. H., L. D. Igl, and M. D. Schwartz. April 1997. Changes in breeding bird communities of CRP fields in the northern Great Plains. Annual meeting of the Wilson Ornithological Society, Manhattan, Kansas.

Igl, L. D., and D. H. Johnson. February 1997. Changes in breeding bird populations in North Dakota: 1967 and 1992-93. Monthly meeting of the Fargo-Moorhead Chapter of The National Audubon Society, Concordia College, Moorhead, Minnesota. (Invited presentation)

Igl, L. D., and D. H. Johnson. February 1997. Habitat associations of breeding birds in North Dakota: 1967 and 1992-93. Annual meeting of the North Dakota Chapter of The Wildlife Society, Mandan, North Dakota.

Johnson, D. H., T. L. Shaffer, S. C. Erstad, L. D. Igl, and D. L. Larson. April 1996. The biotic resources of the Great Plains: serving information on the Internet. Annual meeting of the North Dakota Academy of Science, Valley City, North Dakota.

Shaffer, T., D. Johnson, S. Erstad, L. Igl, and D. Larson. February 1996. Assessing information about biotic resources of the Great Plains on the Internet. Annual meeting of the North Dakota Chapter of the Wildlife Society, Grand Forks, North Dakota.

Johnson, D. H., T. L. Shaffer, S. Erstad, L. D. Igl, and D. L. Larson. December 1995. The biotic resources of the Great Plains: Serving information on the Internet. Midwest Fish and Wildlife Conference, Detroit, Michigan.

Basili, G. D., E. J. Finck, L. Igl, D. Reinking, K. Steigman, S. A. Temple, and J. L. Zimmerman. October 1995. Breeding biology of the Dickcissel. International Conference and Training Workshop on Conservation and Ecology of Grassland Birds and the Annual Meeting of the Association of Field Ornithologists, Tulsa, Oklahoma.

Igl, L. D., and D. H. Johnson. October 1995. Stewart and Kantrud (1972) revisited: breeding bird population estimates and patterns of change in North Dakota, 1967 and 1992-93. International Conference and Training Workshop on Conservation and Ecology of Grassland Birds and the Annual Meeting of the Association of Field Ornithologists, Tulsa, Oklahoma.

Igl, L. D., and D. H. Johnson. October 1995. Le Conte's Sparrows breeding in Conservation Reserve Program fields: precipitation and patterns of population change. International Conference and Training Workshop on Conservation and Ecology of Grassland Birds and the Annual Meeting of the Association of Field Ornithologists, Tulsa, Oklahoma.

Igl, L. D., and D. H. Johnson. April 1995. Recent and long-term changes in Baird’s Sparrow populations. Baird’s Sparrow Status Meeting, Billings, Montana. (Invited presentation)

Johnson, D. H., and L. D. Igl. March 1995. Use of Conservation Reserve Program fields by breeding birds. Natural Resources Conservation Service, District Conservationists’ Meeting, Jamestown, North Dakota. (Invited presentation)

Igl, L. D., and D. H. Johnson. February 1995. Contribution of the Conservation Reserve Program to populations of breeding birds in North Dakota. Annual meeting of the North Dakota Chapter of the Wildlife Society, Bismarck, North Dakota.

Igl, L. D., August 1994. The mission and activities of the Grasslands Ecosystem Initiative. Annual meeting of the Organization of Fish and Wildlife Information Managers, Mountain Lake, Virginia.

Igl, L. D., and D. H. Johnson. June 1994. Changes in breeding bird populations in the northern Great Plains: 1967 to present. First North American Ornithological Conference (Joint meeting of the American Ornithologists' Union, Cooper Ornithological Society, and Wilson Ornithological Society), Missoula, Montana.

Igl, L. D., and D. H. Johnson. February 1993. Changes in breeding bird populations in North Dakota, 1967-1992. Annual meeting of the North Dakota Chapter of the Wildlife Society, Bismarck, North Dakota.

Igl, L. D., L. B. Best, and B. J. Frawley. June 1990. The effects of drought on Dickcissel (Spiza americana) site fidelity and colonization patterns in alfalfa fields. Joint meeting of the American Ornithologists' Union and the Cooper Ornithological Society, Los Angeles, California.


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