destructive is correct, they tear up roads, trails, food plots, they eat every acorn, I don't mean they eat a lot of acorns, I mean they get them all. They turn the feeders over, bend the legs, it's like they get mad if your feeder runs out of corn, they start trying to bang it around to get more out. We have 4 feeders for my wife and I. Everyone has been turnover. We have a pile of bent legs. They are very smart. They have poor eye sight but excellent hearing and a SUPER nose. They are built like tanks with a smaller than deer vital area. The boars develope sheilds of 2" thick or more grizzle to protect them from fighting. Look at the scars on this ole fellar. Thier cutters grow to 3" outside the gum or more and are litterly razor sharp. I LOVE hunting them. It's open year round with no limits.