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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: 1930

Aquatic habitats--waterfowl Aquatic habitats--waterfowl

No abstract available.
Authors
J. T. Lokemoen, F.B. Lee, Harold F. Duebbert, G.A. Swanson

Effects of weather on habitat selection and behavior of mallards wintering in Nebraska Effects of weather on habitat selection and behavior of mallards wintering in Nebraska

Sex and age ratios, habitat selection, spatial characteristics, and time budgets of Mallards (Anas platyrhynchos) wintering on the Platte River in south central Nebraska were studied from mid-December to early April 1978-1980. The proportion of females and subadults in the population increased substantially from a cold to a mild winter. Radio-tagged Mallards shifted from riverine to...
Authors
Dennis G. Jorde, Gary L. Krapu, R.D. Crawford, M.A. Hay

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
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