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: 41778
A method for producing healthy carriers of the Jones' barn strain of Trichomonas gallinae
No abstract available.
Authors
R. M. Kocan
Survival in wood duck broods
Mortality of wood ducklings (Aix sponsa) from hatching to 6 weeks of age averaged 47 percent during a 4-year study at the Patuxent Wildlife Research Center. Over 90 percent of the total mortality occurred during the first 2 weeks of life. Brood bonds began to dissolve after the fifth week. hlortality after 2 weeks was so low that Class I1 broods were believed to provide reliable estimates of produ
Authors
F. B. McGilvrey
Pre-nesting and nesting behavior of the Swainson's warbler
The Swainson?s Warbler is one of the least known of southern birds. Although fairly common in some parts of its summer range, observations of its breeding biology have been made by very few persons. The present study was conducted mostly at Macon, Georgia; Pendleton Ferry, Arkansas; and Dismal Swamp, Virginia....In central Georgia and east-central Arkansas, Swainson?s Warblers usually arrive on th
Authors
B. Meanley
A winter record of the Wilson's warbler at the Patuxent Wildlife Research Center, Laurel, Maryland
No abstract available.
Authors
L. N. Locke, F.S. Locke
The wild camellia and dwarf trillium in the Great Dismal Swamp
No abstract available.
Authors
B. Meanley
Taxonomy of the common dolphins of the Eastern Pacific Ocean
Delphinus bairdii Dall is a species of dolphin distinct from D. delphis Linnaeus, with which it has usually been synonymized. D. bairdii has a longer rostrum relative to the zygomatic width of the skull; the ratio of these measurements falls at 1.55 or above for bairdii and 1.53 and below for delphis. In the eastern Pacific Ocean, D. bairdii is found in the Gulf of California and along the west co
Authors
R.C. Banks, R. Brownell
Relationships of the avifauna of San Esteban Island, Sonora
Seven species of geographically variable birds have been reported as part of the resident avifauna of San Esteban Island in the Gulf of California, Sonora. Two of these, the Curvebilled Thrasher and the Blue-gray Gnatcatcher, may not actually have breeding populations there, at least at the present time. Of the seven, only two, the Verdin and the doubtfully resident thrasher, can be used in a dete
Authors
R.C. Banks
Significance of chlorinated hydrocarbon residues to breeding pelicans and cormorants
No abstract available.
Authors
D. W. Anderson, J.J. Hickey, R.W. Risebrough, D.F. Hughes, R. E. Christensen
Nationwide residues of organochlorine pesticides in wings of mallards and black ducks
Nationwide monitoring of organochlorine pesticides in wings of more than 24,000 mallards and black ducks bagged during the1965 and 1966 hunting seasons showed DDE to be the predominant residue, followed in order by DDT, DDD, dieldrin, and heptachlor epoxide. Residues were generally highest in wings from the Atlantic and Pacific Flyways, and lowest in the Central Flyway. DDE was reported for ever
Authors
Robert G. Heath
Marked DDE impairment of mallard reproduction in controlled studies
No abstract available.
Authors
R.G. Heath, J. W. Spann, J.F. Kreitzer