The double-crested cormorant, a fish-eating bird that can dive to 60 feet underwater, is becoming a major concern for Southern California fisheries managers.

At Santa Ana River Lakes, cormorants eat an estimated $100,000 worth of stocked trout each year. The birds have also impacted fish populations on Laguna Niguel, Irvine and other nearby lakes.

A U.S. Fish and Wildlife plan to manage cormorant numbers won't help California or other Western states. Scheduled for implementation later this year, it is directed at bird populations in Eastern and Great Lakes states