Researchers feel a different sort
of “spread the risk” strategy may be
needed to reduce the impact of nesting
Caspian terns on migrating
Columbia-Snake river salmon and
steelhead.
A spring-early summer experiment
near the mouth of the Columbia was
aimed at moving the world’s largest
colony of Caspian terns, and their
appetites, from one island to the
other. It has been estimated the birds
consume from 10 million to 30 million
salmon smolts annually, which is
about 10 to 30 …
