2011 Avian Predation Report: Cormorants Consume 20 Million Salmonids, Terns Take 4.8 Million

The Caspian tern colony on the lower Columbia River estuary’s East Sand Island, the largest of its kind in the world, was smaller in 2011 than the previous year and was beset by a variety of disturbances, but the birds present still managed to eat a sizeable number of juvenile salmon and steelhead headed for the Pacific Ocean.

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