Ongoing Research Tracks Movements, Steelhead Predation By Caspian Terns In Mid-Columbia Basin

Even as plans are being made to reduce the impact of Caspian terns on salmon and steelhead in the Columbia River plateau region, the predatory birds are continuing to be what researchers call “the single most significant (per capita) avian predator” on juvenile steelhead migrating from the Snake River basin and the upper Columbia.

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