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: 1963
The timing of wing molt in tundra swans: energetic and non-energetic constraints The timing of wing molt in tundra swans: energetic and non-energetic constraints
Date of wing molt initiation, based on the regression of tenth primary length on capture date, was calculated for breeding and nonbreeding Tundra Swans (Cygnus columbianus columbianus) on the Colville River Delta, Alaska. Breeding females initiated wing molt significantly later than breeding males and nonbreeding males and females; the molt of breeding females was correlated with the...
Authors
S.L. Earnst
Characteristics of snowy plover (Charadrius alexandrinus) nest sites on agricultural drainwater evaporation ponds in the San Joaquin Valley, California Characteristics of snowy plover (Charadrius alexandrinus) nest sites on agricultural drainwater evaporation ponds in the San Joaquin Valley, California
No abstract available.
Authors
D. A. Barnum, W.L. Hohman, D.L. Roster
Foraging ecology and nutrition Foraging ecology and nutrition
No abstract available.
Authors
Gary L. Krapu, K. J. Reinecke
Standing crops and ecology of aquatic invertebrates in agricultural drainwater ponds in California Standing crops and ecology of aquatic invertebrates in agricultural drainwater ponds in California
We examined standing crops and ecology of aquatic invertebrates in agricultural drainwater evaporation ponds in California from October 1982 to March 1983 and September 1983 to March 1984. Evaporation ponds supported low diversities but high standing crops of aquatic invertebrates. A water boatman (Trichocorixa reticulata) and a midge (Tanypus grodhausi) were the most abundant...
Authors
N.H. Euliss, R. L. Jarvis, D.S. Gilmer
Two Incubating mallards move eggs to drier nest sites Two Incubating mallards move eggs to drier nest sites
No abstract available.
Authors
J. P. Fleskes
Brood parasitism among waterfowl nesting on islands and peninsulas in North Dakota Brood parasitism among waterfowl nesting on islands and peninsulas in North Dakota
During 1985 and 1986 I studied interspecific brood parasitism among seven species of waterfowl nesting on 36 islands and 24 peninsulas in central North Dakota. On islands, 40% of 178 nests were parasitized with an average of 4.3 parasitic eggs, and on peninsulas 2% of 275 nests were parasitized with an average of 2.2 parasitic eggs. Redheads (Aythya americana) were the primary parasite...
Authors
J. T. Lokemoen
Impacts of changing irrigation practices on waterfowl habitat use in the southern San Joaquin Valley, California Impacts of changing irrigation practices on waterfowl habitat use in the southern San Joaquin Valley, California
We used diurnal aerial census data to examine habitat use patterns of ducks wintering in the southern San Joaquin Valley, California from 1980-87. We calculated densities (birds/ha) for the northern pintail (Anas acuta), mallard (A. platyrhynchos), green-winged teal (A. crecca), cinnamon teal (A. cyanoptera), shoveler (A. clypeata), ruddy duck (Oxyura jamaicensis), and total ducks in...
Authors
D. A. Barnum, N. H . Euliss
Habitat use and movements of canvasback broods in southwestern Manitoba Habitat use and movements of canvasback broods in southwestern Manitoba
Canvasback (Aythya valisineria) broods (n = 69) accompanying marked females were observed during five summers in southwestern Manitoba. We evaluated movements of broods of different age classes ( 14 days old, 15-28 days old, and >28 days old) among ponds of different size and wetland class. Of 202 brood sightings, 7% occurred on seasonal ponds, 81% on semipermanent ponds, and 12% on...
Authors
J. E. Austin, J.R. Serie
Seasonal pattern of reverse mounting in the groove-billed ani (Crotophaga sulcirostris) Seasonal pattern of reverse mounting in the groove-billed ani (Crotophaga sulcirostris)
We observed reverse mounting behavior in a color-banded population of Groove-billed Anis (Crotophaga sulcirostris) in Costa Rica. Sex was determined with measurements and laparotomies. Reverse mounting appeared nearly identical to mounting by males. Of 27 mountings in which at least one bird was banded, 15 were reverse mountings. Only reverse mountings (11 observations) were observed in...
Authors
B. S. Bowen, Rolf R. Koford, S.L. Vehrencamp
Further comments on estimating nest success Further comments on estimating nest success
No abstract available.
Authors
Douglas H. Johnson
Wigeongrass (Ruppia maritima): a literature review Wigeongrass (Ruppia maritima): a literature review
Wigeongrass (Ruppia maritima L.) is a submersed macrophyte of nearly cosmopolitan distribution and worldwide importance as a waterfowl food. Unfortunately, the plant no longer inhabits vast areas disturbed by human activities. Taxonomic status of the plant is uncertain, especially in North America. In mild climates, in habitats subject to environmental extremes, the plant behaves as an...
Authors
Harold A. Kantrud
[Book review] Modern Elementary Probability and Statistics, by E. J. Dudewicz, P. Chen, and B. K. Taneja [Book review] Modern Elementary Probability and Statistics, by E. J. Dudewicz, P. Chen, and B. K. Taneja
Review of: Modern Elementary Probability and Statistics, by Edward J. Dudewicz, Pinyuen Chen, and Baldeo K. Taneja. Colombus, OH: American Sciences Press, 1989, ix + 372 pp., $34.50 (paperback).
Authors
Douglas H. Johnson