My GC were also like 4Corners'. They were hogs at feeding time. I caught them on hook and line, and I even shot them with .22 birdshot. Nothing stopped them until I shot and killed one with a regular .22 lr. I should point out it's safe to do so at my pond. The others never returned after that. My pond turned over last fall, and they died. They won't be replaced. They are intelligent and can be amusing though.
