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: 1952
Foraging ecology and nutrition Foraging ecology and nutrition
No abstract available.
Authors
Gary L. Krapu, K. J. Reinecke
Nesting waterfowl and water birds on natural islands in the Dakotas and Montana Nesting waterfowl and water birds on natural islands in the Dakotas and Montana
No abstract available.
Authors
John T. Lokemoen, Robert O. Woodward
Influence of age and selected environmental factors on reproductive performance of canvasbacks Influence of age and selected environmental factors on reproductive performance of canvasbacks
Age, productivity, and other factors affecting breeding performance of canvasbacks (Aythya valisineria) are poorly understood. Consequently, we tested whether reproductive performance of female canvasbacks varied with age and selected environmental factors in southwestern Manitoba from 1974 to 1980. Neither clutch size, nest parasitism, nest success, nor the number of ducklings/brood...
Authors
Jerome R. Serie, David L. Trauger, Jane E. Austin
An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds
Regression equations that use mensural data to estimate body condition have been developed for several water birds. These equations often have been based on data that represent different sexes, age classes, or seasons, without being adequately tested for intergroup differences. We used proximate carcass analysis of 538 adult and juvenile canvasbacks (Aythya valisineria ) collected during...
Authors
D. W. Sparling, J.A. Barzen, J.R. Lovvorn, J.R. Serie
A stochastic population model of mid-continental mallards A stochastic population model of mid-continental mallards
We developed a simulation model that integrates infonnation on factors affecting the population dynamics of mallards in the mid-continental region of the United States. In the model we vary age, body mass, and reproductive and molt status of simulated females. Females use several types of nesting and foraging habitat in 15 geographic areas. Deterministic and stochastic events cause...
Authors
Rolf R. Koford, J.R. Sauer, Douglas H. Johnson, J.D. Nichols, M.D. Samuel
Northern Prairie Wildlife Research Center. A focus for waterfowl research Northern Prairie Wildlife Research Center. A focus for waterfowl research
Abstract has not been submitted
Authors
R.E. Kirby, D.S. Gilmer
Waterfowl production on the Woodworth Station in south-central North Dakota, 1965-1981 Waterfowl production on the Woodworth Station in south-central North Dakota, 1965-1981
During 17 years of study at the Woodworth, North Dakota study area, the percent of 548 wetland basin with water during 1-15 May ranged from 8 to 87 and averaged 56; waterfowl pair densities varied from 19 to 56/km2 and averaged 40/km2. Pond occupancy by duck pairs averaged 37% during mid-May counts and 48% for late May and early June counts. A positive linear relation occurred between...
Authors
K.F. Higgins, L.M. Kirsch, Albert T. Klett, H.W. Miller
Survival and other observations of adult female northern pintails molting in California Survival and other observations of adult female northern pintails molting in California
Survival rates of nine adult female Northern Pintails (Anas acuta) that became flightless after being radio-marked in the Sacramento Valley, California in August 1987-1989 were estimated. Seven of the radio-marked pintails molted in the Sacramento Valley, a nontraditional molting region, and two flew 280 km north to the Klamath Basin to molt. Molting marshes were dominated by emergent...
Authors
M. R. Miller, J. P. Fleskes, D.L. Orthmeyer, D.S. Gilmer
Late gray partridge nest Late gray partridge nest
Abstract has not been submitted
Authors
H.A. Kantrud
Does supplemental feeding of red squirrels change population density, movements, or both? Does supplemental feeding of red squirrels change population density, movements, or both?
Supplemental feeding increased the number of red squirrels (Tamiasciurus hudsonicus) captured on two trapping grids, leading Sullivan (Journal of Mammalogy, 71:579–590, 1990) to infer that the population density of residents had increased. This conclusion is questionable because the residency status of captured squirrels was unknown.
Authors
Rolf R. Koford
Diurnal flight time of wintering Canada geese: consideration of refuges and flight energetics Diurnal flight time of wintering Canada geese: consideration of refuges and flight energetics
We monitored individual radio-equipped Canada geese (Branta canadensis) associated with a federal refuge to assess flight activities from late fall through spring. The number of flights per day was lowest in late fall when most geese remained within the refuge and highest in spring when they moved increasingly beyond the refuge area. The only significant seasonal difference in flight...
Authors
J. E. Austin, D.D. Humburg
Survival and other observations of adult female northern pintails molting in California Survival and other observations of adult female northern pintails molting in California
No abstract available.
Authors
M. R. Miller, J. P. Fleskes, D.L. Orthmeyer, D.S. Gilmer