Annual Avian Predation Report: Estuary Terns, Cormorants Consume 15-20 Percent Wild, Hatchery Smolts

Combined losses of juvenile salmon and steelhead to predation by Caspian terns and double-crested cormorants in the Columbia River estuary were about 27 million smolts, according to preliminary data presented Tuesday to researchers during a gathering in Walla Walla, Wash.

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