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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: 1899

A slough for saving

Abstract has not been submitted
Authors
G.L. Krapu, J.L. Eldridge

Age determination of mallards

A technique for distinguishing adult from yearling wild mallards (Anas platyrhynchos), from late winter through the nesting season, was developed by applying discriminant analysis procedures to selected wing feather characters of 126 yearlings and 76 adults (2-year-olds) hand-reared from wild eggs during 1974, 1975, and 1977. Average values for feather characters generally increased as the birds a
Authors
G.L. Krapu, D. H. Johnson, C.W. Dane

Mate preference in wild and domesticated (game-farm) mallards: II. Pairing success

Experiments were designed to determine whether assortative mating occurs in wild and game-farm mallard strains (Anas platyrhynchos). Mallard males of either strain raised with females of their own strain courted females of their own strain more than females of the opposite strain, and these males were only successful in pairing with females of their own strain. Males raised with females of the opp
Authors
K.M. Cheng, R.N. Shoffner, R.E. Phillips, F.B. Lee

Early imprinting in wild and game-farm mallards (Anas platyrhynchos): genotype and arousal

Early imprinting was studied under laboratory conditions in five lines of mallards (Anas platyrhynchos) with different degrees of wildness obtained through pedigreed breeding. Data were analyzed by the least squares method. Wild ducklings imprinted better than game-farm (domesticated) ducklings, and heterosis was demonstrated to exist in imprinting traits. Nonadditive genetic variations and genoty
Authors
K.M. Cheng, R.N. Shoffner, R.E. Phillips, L.J. Shapiro

Some ecological aspects of marbled godwits and willets in North Dakota

No abstract available.
Authors
K.F. Higgins, L.M. Kirsch, M.R. Ryan, Rochelle B. Renken

Use of prairie pothole habitat by breeding mallards

Abstract has not been submitted
Authors
T.J. Dwyer, G.L. Krapu, D.M. Janke

Display inventory of the torrent duck

Abstract has not been submitted
Authors
J.L. Eldridge

Effects of a summer storm on bird populations

Abstract has not been submitted
Authors
D. H. Johnson

Status of the black tern in western Wisconsin

Abstract has not been submitted
Authors
C. A. Faanes

Estimating nest success: The Mayfield method and an alternative

Mayfield's method for calculating the success of a group of nests is examined in detail. The standard error of his estimator is developed. Mayfield's assumption that destroyed nests are at risk until the midpoint of the interval between visits leads to bias if nests are visited infrequently. A remedy is suggested, the Mayfield-40% method. I also present a competing model, which recognizes that the
Authors
Douglas H. Johnson