Increased Efforts To Reduce Bird Predation At Mid-Columbia Dams Help Achieve Fish Survival Standards

The covering of bird predation hot spots with wire arrays and launching of an intensified hazing effort in combination appears to have dissuaded Caspian terns and gulls from congregating below the mid-Columbia River’s Priest Rapids and Wanapum dams to feed on migrating juvenile sockeye salmon, according data compiled last year by Grant County Public Utility District researchers.

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