Lawrence Igl, PhD
Larry Igl is a Research Ecologist at the USGS Northern Prairie Wildlife Research Center in Jamestown, North Dakota.
His research interests are avian ecology and conservation, with an emphasis on grassland, wetland, and agricultural ecosystems in the Midwest and Great Plains. Specific areas of interest include avian responses to habitat management and disturbances, Farm Bill and agriculture programs, grassland bird ecology, cowbird brood parasitism, and nesting ecology. He has conducted surveys of breeding, migrating, and wintering birds throughout the southern, central, and northern Great Plains. Recent investigations include a long-term evaluation of breeding bird communities in grasslands enrolled in the Conservation Reserve Program in North Dakota, South Dakota, Minnesota, and Montana; an eco-immunology study of New World Blackbirds; a study relating wetland management to mercury in songbirds and ducks; an evaluation of the effects of livestock stocking rates on breeding birds in grasslands managed by the U.S. Forest Service; and an investigation of the response of grassland birds to adaptive management treatments that are being used to restore floristic composition of native grasslands owned by the U.S Fish and Wildlife Service.
Professional Experience
2010-present. Research Ecologist, Northern Prairie Wildlife Research Center, U.S. Geological Survey, Jamestown, ND
1992–2010. Ecologist, Northern Prairie Wildlife Research Center, U.S. Geological Survey, Jamestown, ND
Education and Certifications
Ph.D., Zoology, North Dakota State University, Fargo, ND
M.S., Animal Ecology, Iowa State University, Ames, IA
B.S., Triple major (Biology, Wildlife Ecology, and Natural Resources Management), University of Wisconsin, Stevens Point, WI
Science and Products
Habitat associations of migrating and overwintering grassland birds in Southern Texas
Effects of management practices on grassland birds: Willet
Effects of management practices on grassland birds: Western Meadowlark
Effects of management practices on grassland birds: Upland Sandpiper
Effects of management practices on grassland birds: Ferruginous Hawk
Effects of management practices on grassland birds: Dickcissel
Effects of management practices on grassland birds: Burrowing Owl
Uncommon breeding birds in North Dakota: Population estimates and frequencies of occurrence
Habitat associations of migrating and overwintering grassland birds in southern Texas
Effects of management practices on grassland birds: Wilson's Phalarope
Effects of management practices on grassland birds: Bobolink
Effects of management practices on grassland birds: American Bittern
Science and Products
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Filter Total Items: 118
Habitat associations of migrating and overwintering grassland birds in Southern Texas
We report on the habitat associations of 21 species of grassland birds overwintering in or migrating through southern Texas, during 1991-1992 and 1992-1993. Ninety percent of our grassland bird observations were made during winter and spring, and only 10% occurred during fall. Grassland species made up a high proportion of the total bird densities in grassland and shrub-grassland habitats, but mucAuthorsLawrence D. Igl, Bart M. BallardEffects of management practices on grassland birds: Willet
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Barry D. Parkin, Betty R. EulissEffects of management practices on grassland birds: Western Meadowlark
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. EulissEffects of management practices on grassland birds: Upland Sandpiper
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Meghan F. Dinkins, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Barry D. Parkin, Betty R. EulissEffects of management practices on grassland birds: Ferruginous Hawk
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. EulissEffects of management practices on grassland birds: Dickcissel
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. EulissEffects of management practices on grassland birds: Burrowing Owl
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Paul A. Rabie, Betty R. EulissUncommon breeding birds in North Dakota: Population estimates and frequencies of occurrence
Breeding bird populations were surveyed on 128 randomly selected quarter-sections throughout North Dakota in 1967, 1992, and 1993. Population estimates and frequencies of occurrence are reported for 92 uncommon breeding bird species with statewide frequencies of less than 10%.AuthorsL.D. Igl, D. H. Johnson, H.A. KantrudHabitat associations of migrating and overwintering grassland birds in southern Texas
We report on the habitat associations of 21 species of grassland birds overwintering in or migrating through southern Texas, during 1991-1992 and 1992-1993. Ninety percent of our grassland bird observations were made during winter and spring, and only 10% occurred during fall. Grassland species made up a high proportion of the total bird densities in grassland and shrub-grassland habitats, but mucAuthorsL.D. Igl, B.M. BallardEffects of management practices on grassland birds: Wilson's Phalarope
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 4,000 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. EulissEffects of management practices on grassland birds: Bobolink
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. EulissEffects of management practices on grassland birds: American Bittern
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 5,500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although birds frequently are observed outside the breeding range indicated, the maps aAuthorsJill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. Euliss