Saturday, June 15, 2013 at 8:58 a.m.
Years ago, Yellow-billed Cuckoos like this one were frequent visitors to the Pacific Northwest. They’re one of the few birds that eat tent caterpillars, a species that can wreak havoc on the leaves of trees. It’s a mystery why the cuckoos no longer come. During a tent caterpillar outbreak, we know it can’t be for lack of food. Something else must be at play.
