For the past week or so it looks like our chickens (10 Buff Orpingtons) have been having nightly parties in their coop! They pull half of the hay out of the nesting boxes and knock all the pellets out of the feeder. They have access to an enclosed run, which admittedly is somewhat boring at this time of year since there aren't any bugs out and the grass has all died, but I toss out some grit regularly for them to scratch around for. I also take treats out nearly every day, which I try to vary. Most of the time it is leftover produce (salad greens, carrot peels, squash seeds and pulp, etc.), and sometimes it's oats, wheat berries, and raisins. I clean everything up, only to find it all a mess again! Any reason why they might be doing this?