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Publications

USGS Northern Prairie Wildlife Research Center staff publish results of their research in USGS series reports and in peer-reviewed journals. Publication links are below.  Information on all USGS publications can be found at the USGS Publications Warehouse.

Filter Total Items: 1945

Feeding ecology of mallards wintering in Nebraska Feeding ecology of mallards wintering in Nebraska

Food use by mallards (Anas platyrhynchos) wintering on the Platte River in south central Nebraska was determined from mid-December to early March 1978-80. Mallards foraged in river channels, irrigation drainage canals, and agricultural areas. Plant matter formed 97% of the diet (dry weight) and diets did not vary between sexes (P > 0.05). Waste corn was the principal food consumed and...
Authors
Dennis G. Jorde, Gary L. Krapu, R.D. Crawford

Concentrated nesting of mallards and gadwalls on Miller Lake Island, North Dakota Concentrated nesting of mallards and gadwalls on Miller Lake Island, North Dakota

Island-nesting mallards (Anas platyrhynchos) and gadwalls (A. strepera) were studied on a 4.5-ha island in 385-ha Miller Lake in northwestern North Dakota during 1976-80. During the 5-year study, 2,561 duck nests of 9 species were found on Island A located 180 m offshore; 59% were mallard and 34% were gadwall. In patches of shrub cover, which contained the greatest concentrations of...
Authors
Harold F. Duebbert, John T. Lokemoen, David E. Sharp

Migration and winter distributions of canvasbacks staging on the Upper Mississippi River Migration and winter distributions of canvasbacks staging on the Upper Mississippi River

Fall and winter distribution patterns of canvasbacks (Aythya valisineria) staging on the upper Mississippi River near LaCrosse, Wisconsin (navigational Pools 7 and 8) and Keokuk, Iowa (Pool 19) were studied during 1973-77. Sightings and recoveries obtained from 1,488 color-marked males during 1973-75 and 3,789 banded males and females during 1973-77 suggested 2 principal migration...
Authors
J.R. Serie, D.L. Trauger, D.E. Sharp

Avian associations of the northern Great Plains grasslands Avian associations of the northern Great Plains grasslands

The grassland region of the northern Great Plains was divided into six broad subregions by application of an avian indicator species analysis to data obtained from 582 sample plots censused during the breeding season. Common, ubiquitous species and rare species had little classificatory value and were eliminated from the data set used to derive the avian associations. Initial statistical...
Authors
H.A. Kantrud, R.L. Kologiski

Ferruginous hawk populations and habitat use in North Dakota Ferruginous hawk populations and habitat use in North Dakota

Ferruginous hawks (Buteo regalis) were studied in central North Dakota on a 1,259-km2 intensive study block and on a surrounding study area (16,519 km2) from 1977 to 1979. A total of 629 occupied nests was examined. Highest nest densities (0.08 nest/km2) were in the Missouri Coteau in 1979. Few nests were found on the more intensively cultivated Drift Plain. We estimated the breeding...
Authors
David S. Gilmer, Robert E. Stewart
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