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
Feeding ecology of pintail hens during reproduction Feeding ecology of pintail hens during reproduction
Food supply has been acknowledged as one of eight major external factors regulating the sexual cycles of birds (Marshall 1961). Several hypotheses have been advanced to explain the role of food supply as an ultimate factor regulating breeding (Marshall 1951; Lack 1954, 1968; Wynne-Edwards 1962; and others). Another potential influence of food is its being a proximate stimulus to breeding...
Authors
Gary L. Krapu
Wood ducks in North Dakota Wood ducks in North Dakota
Abstract has not been submitted
Authors
Harold A. Doty
Upland nesting. Creating a sea of grass Upland nesting. Creating a sea of grass
Abstract has not been submitted
Authors
Harold F. Duebbert
Nematode parasites of waterfowl (Anseriformes) from western United States Nematode parasites of waterfowl (Anseriformes) from western United States
Thirty-four species of nematodes were found in 415 Anseriformes (Anatidae) of 27 species; 93.7% of birds over 4 weeks old were infected. Data on prevalence, host specificity, age of host, and geographic distribution are given. Infections were more intense in sick birds and birds in poor physical condition. Accidental or abnormal infection was more likely in sick than in normal birds...
Authors
M.E. McDonald
Relationships between chemical structure and rat repellency: II. compounds screened between 1950 and 1960 Relationships between chemical structure and rat repellency: II. compounds screened between 1950 and 1960
Over 4,600 compounds, chiefly organic types, were evaluated using both a food acceptance test (Part A) and a barrier penetration bioassay (Part B), to correlate relationships between chemical structure and rodent repellency. These chemicals are indexed and classified according to the functional groups present and to the degree of substitution within their molecular structures. The...
Authors
Walter A. Bowles, V. A. Adomaitis, J.B. DeWitt, J.J. Pratt
New concepts regarding the production of waterfowl and other game birds in areas of diversified agriculture New concepts regarding the production of waterfowl and other game birds in areas of diversified agriculture
Many concepts regarding breeding ecology of waterfowl and the influences of environmental factors on annual production have changed in the past 20 years. These influences are especially pronounced in the prairie region of central North America where agriculture becomes more intensive each year. The principal task assigned to this Research Center when established in 1965 was to determine...
Authors
H.K. Nelson, Harold F. Duebbert
Reproductive aspects, growth, and development of Greenland mallards Reproductive aspects, growth, and development of Greenland mallards
No abstract available.
Authors
R. J. Greenwood
The prairie: to know it is to appreciate it The prairie: to know it is to appreciate it
Abstract has not been submitted
Authors
J. T. Lokemoen, Gary L. Krapu
Ice on waterfowl markers Ice on waterfowl markers
Wild and captive giant Canada geese (Branta canadensis maxima) and captive mallards (Anas platyrhynchos) accumulated ice on neck collars and/or nasal saddles during winter storm periods in 1971 and 1972. Weather conditions associated with icing were documented, and characteristics of icing are discussed. Severe marker icing occurred during subfreezing weather when the windchill reached
Authors
R. J. Greenwood, W.C. Bair
A biological survey of Kraft Slough A biological survey of Kraft Slough
Abstract has not been submitted
Authors
Gary L. Krapu, Harold F. Duebbert
Habitat management considerations for prairie chickens Habitat management considerations for prairie chickens
Lack of nesting and brood rearing habitat appears to be the universal limiting factor for prairie chickens (Tympanuchus cupido pinnatus) throughout their range. Grasslands are essential to prairie chickens, but vary widely in quality and thus in their ability to support prairie chickens. High-quality habitat is grassland providing residual vegetation averaging about 20 inches in height...
Authors
L.M. Kirsch