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Tag – Cormorant

Double-crested Cormorant Colony at Astoria-Megler Bridge to Be Relocated Back to East Sand Island

December 06, 2023
Carol Winkel

In the last 10 years, the cormorant population has grown 1500% at Astoria Bridge, both accelerating erosion of the bridge and increasing salmon predation.

Double-crested Cormorants Relocating Upriver Increases Predation of Salmon

November 21, 2022
Carol Winkel

Avian predation – hungry birds feeding on endangered salmon – is identified in the Council’s fish and wildlife program as a serious concern, and the program supports managing the impact of predators on juvenile salmon and steelhead.

Research Shows Hungry Terns and Cormorants Are Still a Problem, Particularly For Some Steelhead Smolts

September 25, 2019
John Harrison

Fish-eating birds continue to take a significant toll on juvenile salmon and steelhead near the confluence of the Snake and Columbia rivers, and in the Columbia River estuary, and the impacts are disturbing and surprising.

Culling Cormorants May Not Help Fish Survival

May 20, 2016
John Harrison

A preliminary analysis by a U.S. Department of Fish and Wildlife scientist suggests no effect on the survival of Snake River steelhead.

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