I have a RIR that we have raised from 1 week old. She is about 6 months old. She had never been the cuddliest bird we have but never out right mean. For about 3 weeks now she had been mean to us humans, not to the other chickens. If you go near her she sees it as a threat and lunges at you. You can no longer pick her up or even act like your going to. She is perfectly fine with the other chickens. It's just us that she doesn't like all of a sudden. By the way....she hasn't started laying yet. She doesn't even come close to a submissive squat when you come near her. Quite the opposite....she runs for you! Any advice?