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75th U.S. Army Reserve Innovation Command
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Video by Michelle Helms
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Double-crested cormorants on East Sand Island
U.S. Army Corps of Engineers, Portland District
May 13, 2014 | 1:50
Double-crested cormorants on East Sand Island near the mouth of the Columbia River consume about 11 million juvenile salmonids annually. The young fish, listed under the Endangered Species Act, migrate through the estuary to the Pacific Ocean. The Portland District releases a draft Environmental Impact Statement June 12 that addresses management of the cormorant colony.
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fish
USACE
birds
ecosystem
Salmon
environment
Portland
mouth of the Columbia River
double-crested cormorants
Columbia River Estuary
FCRPS Biological Opinion
juvenile salmonids
avian predation
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