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: 1907
Duck nest structure evaluations in prairie wetlands
Abstract has not been submitted
Authors
H. A. Doty
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
Second North Dakota record of Louisiana waterthrush
Abstract has not been submitted
Authors
C. A. Faanes
Forty-second breeding bird census - mixed prairie I-V and VIII
Abstract has not been submitted
Authors
D. H. Johnson