Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41764
Ground nesting of bald eagles near Yellowknife, Northwest Territories
No abstract available.
Authors
R.G. Bromley, D.L. Trauger
Upland duck nesting related to land use and predator reduction
Duck nesting was studied during 1971 in north-central South Dakota under four conditions: in idle, five or six year old fields of domestic grass-legume mixtures in an area where predators including the red fox (Vulpes fulva), raccoon (Procyon lotor), striped skunk (Mephitis mephitis), and badger (Taxidea taxus) were (1) reduced and (2) not reduced. Nesting was also studied in tracts of active agri
Authors
H. F. Duebbert, H.A. Kantrud
Social behavior of breeding gadwalls in North Dakota
Responses of duck pairs encountering other ducks were categorized by McKinney (1965a) as displays, attack, escape and avoidance, sexual pursuit, and sociability. Gadwalls (Anas strepera) show all these responses on the breeding grounds, and characteristic behavior patterns occur depending on the reproductive state of the birds involved. The responses of paired ducks to unpaired males on the breedi
Authors
T.J. Dwyer
Estimating survival rates from banding of adult and juvenile birds
The restrictive assumptions required by most available methods for estimating survival probabilities render them unsuitable for analyzing real banding data. A model is proposed which allows survival rates and recovery rates to vary with the calendar year, and also allows juveniles to have rates different from adults. In addition to survival rates and recovery rates, the differential vulnerability
Authors
D. H. Johnson
Canada goose restoration
Abstract has not been submitted
Authors
F.B. Lee, A.D. Kruse, L.J. Schoonover, C.H. Schroeder
Career opportunities in ornithology
Abstract has not been submitted
Authors
F.C. James, F.G. Cooch, M.S. Ficken, C.E. Knoder
Use of small fences to protect ground bird nests from mammalian predators
Abstract has not been submitted
Authors
A. B. Sargeant, A.D. Kruse, A. D. Afton
Summer birds for a South Dakota prairie
Abstract has not been submitted
Authors
J. T. Lokemoen, H. F. Duebbert
The prairie: to know it is to appreciate it
Abstract has not been submitted
Authors
J. T. Lokemoen, G.L. Krapu
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. From 1 to 13
Authors
M.E. McDonald
Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII
Abstract has not been submitted
Authors
D. H. Johnson
Predation by rainbow smelt (Osmerus mordax) on young-of-the-year alewives (Alosa pseudoharengus) in the Great Lakes
Although predation by rainbow smelt (Osmerus mordax) on young-of-the-year alewives (Alosa pseudoharengus) in the Great Lakes has long been suspected, evidence has been lacking. Young alewives were first noticed in the alimentary tracts of a few large smelt caught in northeastern Lake Ontario in September 1972. A more detailed examination of the stomach contents of smelt taken at various localiti
Authors
Robert O'Gorman