Lawrence D. Igl, Ph.D.

Igl, L. D., D. H. Johnson, and H. A. Kantrud.  2008.  A historical perspective: changes in grassland breeding bird densities within major habitats in North Dakota between 1967 and 1992-1993.  Pages 275–295 in J. T. Springer and E. C. Springer (editors), Prairie invaders: proceedings of the 20th North American Prairie Conference. University of Nebraska at Kearney, Kearney, Nebraska.

Igl, L. D., and D. H. Johnson.  2007.  Brown-headed Cowbird, Molothrus ater, parasitism and abundance in the northern Great Plains.  Canadian Field-Naturalist 121:239–255.

Hahn, D. C., J. S. Hatfield, M. Abdelnabi, J. Wu, L. D. Igl, and M. A. Ottinger. 2005.  Hormonal basis for cowbird exploitation of hosts.  Journal of Avian Biology 36:40-46.

Igl, L. D., and D. H. Johnson.  2005.  A retrospective perspective: evaluating population changes by revisiting historic bird surveys.  Pages 817-830 in Bird Conservation Implementation and Integration in the Americas: Proceedings of the Third International Partners in Flight Conference 2002 (C.J. Ralph and T.D. Rich, editors).  U.S.D.A. Forest Service, GTR-PSW-191, Albany, California.

Igl, L. D., and R. E. Martin.  2002.  Records of Northern Mockingbird, Mimus polyglottos, occurrences in North Dakota during the twentieth century.  Canadian Field-Naturalist 116:87-97.

Johnson, D. H., and L. D. Igl.  2001.  Area requirements of grassland birds: a regional perspective.  Auk 118:24-34.

Igl, L. D., and B. M. Ballard.  1999.  Habitat associations of migrating and overwintering grassland birds in southern Texas.  Condor 101:771-782.

Igl, L. D., and D. H. Johnson.  1999.  Le Conte's Sparrows breeding in Conservation Reserve Program fields: precipitation and patterns of population change.  Studies in Avian Biology 19:178-186.

Igl, L. D., and D. H. Johnson.  1997.  Changes in breeding bird populations in North Dakota: 1967 to 1992-93.  Auk 114:74-92.

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)