Gary Ziak came across the remains of about 10 bears last week. While the heads, hides and paws piled at Jewell Meadows weren't visible from the highway, turkey vultures circling the heap were, said Ziak, who builds roads for Nygaard Logging. His curiosity turned into alarm when he took a closer look.

One bad apple ...

Like sea lions snacking on Columbia River salmon, it's not the entire bear species causing problems. Bark-peeling is a learned behavior, Higgins said, pointing to research by Wildlife Services in Olympia, Wash.

"One bear will teach another bear, and then that bear will do it," he said. "There are bears that peel and bears that don't peel. We target peeling bears."

And of course, I can't pass up this opportunity:

Homer: Not a bear in sight. The "Bear Patrol" is working like a charm!
Lisa: That's specious reasoning, Dad.
Homer: [uncomprehendingly] Thanks, honey.
Lisa: By your logic, I could claim that this rock keeps tigers away.
Homer: Hmm. How does it work?
Lisa: It doesn't work; it's just a stupid rock!
Homer: Uh-huh.
Lisa: But I don't see any tigers around, do you?
Homer: (pause) Lisa, I want to buy your rock.

Bear carcasses spark alarm