Not sure what the deal is. My sussex hen is obviously head of the coop. I don't think anyone challenges that. Esp. not my little banty girls. But today I find her chasing the 2 girls and the banty roo around the coop picking out their tail feathers. She even went after the Sussex roo! I've not really seen her act this aggressive before. I specifically wanted Sussex because I read they are supposed to be docile and sweet. If she continues to pick at them till they start going bare should I separate her from the others?