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: 41763
Aspergillosis in a bald eagle (Haliaeetus leucocephalus)
No abstract available.
Authors
N. C. Coon, L. N. Locke
A comparison of migration between blackbirds and starlings
No abstract available.
Authors
D. P. Fankhauser
Sensitive resettable odometer aids roadside census of red-winged blackbirds
A sensitive resettable odometer reading to 0.01 mile facilitated censusing breeding male redwinged blackbirds (Agelaius phoeniceus) from a vehicle. Territorial males along roadsides were 'marked' with recorded mileage readings rather than with landmarks of the types employed by Hewitt for censuses based on the Lincoln index principle. Sensitive odometers that can be reset have many potential uses
Authors
D.T. Harke, A.R. Stickley
Blood parasites in North American waterfowl
One thing seems to stand out in the overall knowledge we have of the blood parasites of waterfowl, as previously noted by Herman and Wehr, (1954): the greatest potential of losses is in the younger age groups, usually those birds 5-10 weeks old. In Leucocytozoon infections, death occurs as early as the first or second week of the bird's life. As a conclusion to this presentation, I wish to emphasi
Authors
C. M. Herman
Plasmodium elongatum from a penguin
No abstract available.
Authors
C. M. Herman, R. M. Kocan, E.L. Snyder, J. O. Knisley
Aerial estimation of the size of gull breeding colonies
Counts on photographs and visual estimates of the numbers of territorial gulls are usually reliable indicators of the number of gull nests, but single visual estimates are not adequate to measure the number of nests in individual colonies. To properly interpret gull counts requires that several islands with known numbers of nests be photographed to establish the ratio of gulls to nests applicable
Authors
J.A. Kadlec, W.H. Drury
Gas chromatographic analysis of gamma-BHC, the cyclodienes, and DDT analogs
No abstract available.
Authors
C. M. Menzie, R. M. Prouty