East Sand Cormorant Colony Increasing; Estuary’s Single Most Significant Source Of Smolt Mortality

Salmon-chomping double-crested cormorants that have been nesting in greater numbers each spring and summer at the lower Columbia River estuary’s East Sand Island showed that they could be pushed by human dissuasion from one spot to another, but only a small fraction left the area altogether, according to preliminary results produced during 2013 monitoring.

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