Effects of the Cabinet Gorge Kokanee Hatchery on Wintering Bald Eagles in the Lower Clark Fork River and Lake Pend, Oreille, Idaho: 1986 Final Report.
The abundance and distribution of bald eagles (Haliaeetus leucocephalus) on the lower Clark Fork River, Lake Pend Oreille, and the upper Pend Oreille River, Idaho, were documented during the winters of 1985--86 and 1986--87. Peak counts of bald eagles in weekly aerial censuses were higher in 1985--86 (274) and 1986--87 (429) than previously recorded in mid-winter surveys. Differences in eagle distribution within and between years were apparently responses to changes in prey availability. Eight bald eagles were captured and equipped with radio transmitters in the winter and spring of 1986. Residencies within the study area averaged 13.9 days in 1985--86 and 58.3 days for the four eagles that returned in 1986-87. The eagles exhibited considerable daily movement throughout the study area. After departing the area, one eagle was later sighted approximately 1185 km to the southwest in northern California. Eagle behavioral activity was recorded at time budget sessions at areas of heavy use. Perching in live trees was the most common behavior observed. 34 refs., 39 figs., 17 tabs.
- Research Organization:
- Idaho Department of Fish and Game (IDFG)
- DOE Contract Number:
- AI79-86BP60790
- OSTI ID:
- 6628427
- Report Number(s):
- DOE/BP-60790-1; ON: DE89004065
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kokanee Stock Status and Contribution of Cabinet Gorge Hatchery, Lake Pend Oreille, Idaho, Final Report.
Kokanee Stock Status and Contribution of Cabinet Gorge Hatchery, Lake Pend Oreille, Idaho, 1987 Annual Progress Report.
Related Subjects
54 ENVIRONMENTAL SCIENCES
ENDANGERED SPECIES
BASELINE ECOLOGY
HYDROELECTRIC POWER
ENVIRONMENTAL EFFECTS
ANADROMOUS FISHES
BIOLOGICAL STRESS
BIRDS
BONNEVILLE POWER ADMINISTRATION
IDAHO
POWER GENERATION
PRODUCTION
PROGRESS REPORT
SALMON
SITE CHARACTERIZATION
ANIMALS
AQUATIC ORGANISMS
DOCUMENT TYPES
ECOLOGY
ELECTRIC POWER
ENERGY SOURCES
FEDERAL REGION X
FISHES
NATIONAL ORGANIZATIONS
NORTH AMERICA
POWER
RENEWABLE ENERGY SOURCES
US DOE
US ORGANIZATIONS
USA
VERTEBRATES
Bald eagle - Wintering - Idaho - Pend Oreille
Lake Region
130600* - Hydro Energy- Environmental Aspects
520500 - Environment
Aquatic- Site Resource & Use Studies- (-1989)