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: 41771
Two more yellow-headed blackbirds banded near Laurel, Maryland
No abstract available.
Authors
B. Meanley
Breeding bald eagles in captivity
A 7-year-old female Bald Eagle from Alabama was paired with a 4-year-old Alaskan male in a large flight pen during December 1969. Both birds were free of physical defects when originally placed in the pen but the female was blind in one eye prior to the 1973 breeding season.....Nesting first occurred during 1971 when at least two eggs were laid; all but one, which showed no sign of embryonic devel
Authors
J.R. Maestrelli, Stanley N. Wiemeyer
Report of the American Ornithologists' Union Committee on Conservation
No abstract available.
Authors
D.B. Marshall, A. Baldridge, J. C. Bartonek, W. King, O.T. Oure, R.J. Robel, J. M. Scott
Disproportionate sex ratios of wolf pups
Males comprised 66 percent of wild wolf (Canis lupus) pups from a saturated, high-density wolf range in northeastern Minnesota, possibly reflecting disproportionate conception of males. Packs from areas of lower wolf density in other areas of Minnesota had equal sex ratios of pups or a disproportionate number of female pups. Captive wolves showed a slight preponderance of male pups.
Authors
L. D. Mech
Influence of night-lighting and banding on woodcock movements
No abstract available.
Authors
R.B. Owen, J. W. Morgan
Summer behavior of adult radio-equipped woodcock in central Maine
The behavior of 26 adult American woodcock (Philohela minor) was studied in central Maine during the summers of 1971-73 using radiotelemetry. Adults used diurnal covers and nocturnal sites that were similar to those previously recorded for immature woodcock. The adults, however, were more active during the daylight hours and moved to nocturnal sites later in the evening. Adult woodcock seemed t
Authors
R.B. Owen, J. W. Morgan
Looking out for the canvasback. Canvasback--King of the bay. Part V
No abstract available.
Authors
M. C. Perry
First experiments with capturing golden eagles by helicopter
No abstract available.
Authors
D. H. Ellis