AVIS-IBIS

Birds of Indian Subcontinent

Characteristics of Bald Eagle Communal Roosts in the Klamath Basin, Oregon and California

Publication Type:Journal Article
Year of Publication:1983
Authors:Keister, Jr., GP, Anthony, RG
Journal:The Journal of Wildlife Management
Volume:47
Issue:4
Date Published:1983
ISBN Number:0022541X
Keywords:Accipitridae, Haliaeetus, Haliaeetus leucocephalus
Abstract:The relationship between bald eagles (Haliaeetus leucocephalus) and their winter habitat was examined at 5 communal roosts in the Klamath Basin of southern Oregon and northern California. Bald eagle communal roosts were in forest stands with old (mean age of roost trees = 236 years), open-structured trees closest to the feeding areas. Mean characteristics of forest stands at the 5 roosts were: density, 53.1 trees/ha; dbh, 54.3 cm; height, 26.4 m; percent spikes and snags, 7.2. Roost trees were generally larger and more open in structure than surrounding stand characteristics (dbh, 69.6 cm; height, 28.2 m; percent spikes and snags used, 15.6). Douglas-fir (Pseudotsuga menziesii) occurred in only 1 roost and was used for roosting in a much greater proportion than it occurred. The remaining 4 roosts were nearly single species stands of ponderosa pine (Pinus ponderosa). Management guidelines are suggested to maintain suitable wintering roost habitat for bald eagles.
URL:http://www.jstor.org/stable/3808166
Short Title:The Journal of Wildlife Management
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