Foraging Patterns of Caspian Terns and Double-crested Cormorants in the Columbia River Estuary
Abstract
We examined spatial and temporal foraging patterns of Caspian terns and double-crested cormorants nesting in the Columbia River estuary, to potentially identify circumstances where juvenile salmonids listed under the U.S. Endangered Species Act might be more vulnerable to predation by these avian piscivores. Data were collected during the 1998 and 1999 breeding seasons, using point count surveys of foraging birds at 40 sites along the river's...
Paper Details
Title
Foraging Patterns of Caspian Terns and Double-crested Cormorants in the Columbia River Estuary
Published Date
Mar 1, 2007
Journal
Volume
81
Issue
2
Pages
91 - 103
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