Lawrence Igl, PhD (Former Employee)
Science and Products
Filter Total Items: 121
Changes in breeding bird populations in North Dakota: 1967 to 1992-93 Changes in breeding bird populations in North Dakota: 1967 to 1992-93
We compared breeding bird populations in North Dakota using surveys conducted in 1967 and 1992-93. In decreasing order, the five most frequently occurring species were Horned Lark (Eremophila alpestris), Brown-headed Cowbird (Molothrus ater), Western Meadowlark (Sturnella neglecta), Red-winged Blackbird (Agelaius phoeniceus), and Eastern Kingbird (Tyrannus tyrannus). The five most...
Authors
L.D. Igl, Douglas H. Johnson
Western meadowlark impaled on barbed-wire fence Western meadowlark impaled on barbed-wire fence
Abstract has not been submitted
Authors
L.D. Igl
Le Conte's, sharp-tailed, and Henslow's sparrows in Grant County, Minnesota Le Conte's, sharp-tailed, and Henslow's sparrows in Grant County, Minnesota
Abstract has not been submitted
Authors
L.D. Igl
Second record of white ibis in North Dakota Second record of white ibis in North Dakota
Abstract has not been submitted
Authors
J.W. Marlow, L.D. Igl, M.R. Hartman
Contributions of the Conservation Reserve Program to populations of breeding birds in North Dakota Contributions of the Conservation Reserve Program to populations of breeding birds in North Dakota
Previous studies have shown that habitat provided by the Conservation Reserve Program (CRP), a feature of the 1985 farm bill, is used by many birds. The present study quantitatively assesses the importance of the CRP by estimating changes in breeding-bird populations of North Dakota projected if CRP land would revert to cultivation. Of 18 species that were common in CRP or crop fields or...
Authors
Douglas H. Johnson, L.D. Igl
A noteworthy record and the breeding distribution of the blue grosbeak in North Dakota A noteworthy record and the breeding distribution of the blue grosbeak in North Dakota
The northern limit of the blue grosbeak's (Guiraca caerulea) breeding distribution occurs in southern North Dakota. Records of the blue grosbeak in North Dakota are uncommon. Here, I report my observation of a blue grosbeak at a site where the species was recorded 25 years earlier. A summary of the species' distribution and records in North Dakota are provided.
Authors
L.D. Igl
Science and Products
Filter Total Items: 121
Changes in breeding bird populations in North Dakota: 1967 to 1992-93 Changes in breeding bird populations in North Dakota: 1967 to 1992-93
We compared breeding bird populations in North Dakota using surveys conducted in 1967 and 1992-93. In decreasing order, the five most frequently occurring species were Horned Lark (Eremophila alpestris), Brown-headed Cowbird (Molothrus ater), Western Meadowlark (Sturnella neglecta), Red-winged Blackbird (Agelaius phoeniceus), and Eastern Kingbird (Tyrannus tyrannus). The five most...
Authors
L.D. Igl, Douglas H. Johnson
Western meadowlark impaled on barbed-wire fence Western meadowlark impaled on barbed-wire fence
Abstract has not been submitted
Authors
L.D. Igl
Le Conte's, sharp-tailed, and Henslow's sparrows in Grant County, Minnesota Le Conte's, sharp-tailed, and Henslow's sparrows in Grant County, Minnesota
Abstract has not been submitted
Authors
L.D. Igl
Second record of white ibis in North Dakota Second record of white ibis in North Dakota
Abstract has not been submitted
Authors
J.W. Marlow, L.D. Igl, M.R. Hartman
Contributions of the Conservation Reserve Program to populations of breeding birds in North Dakota Contributions of the Conservation Reserve Program to populations of breeding birds in North Dakota
Previous studies have shown that habitat provided by the Conservation Reserve Program (CRP), a feature of the 1985 farm bill, is used by many birds. The present study quantitatively assesses the importance of the CRP by estimating changes in breeding-bird populations of North Dakota projected if CRP land would revert to cultivation. Of 18 species that were common in CRP or crop fields or...
Authors
Douglas H. Johnson, L.D. Igl
A noteworthy record and the breeding distribution of the blue grosbeak in North Dakota A noteworthy record and the breeding distribution of the blue grosbeak in North Dakota
The northern limit of the blue grosbeak's (Guiraca caerulea) breeding distribution occurs in southern North Dakota. Records of the blue grosbeak in North Dakota are uncommon. Here, I report my observation of a blue grosbeak at a site where the species was recorded 25 years earlier. A summary of the species' distribution and records in North Dakota are provided.
Authors
L.D. Igl