my barred rock has been the bossiest, sassiest girl from the beginning. now i've noticed over the last few days she's more isolated & seriously runs from the rooster. the other girls have some wear & tear on their backsides from his attentions, but not her. now she seems honestly afraid of him & he's beginning to go out of his way to run her off. she's still on the roost with the others & no sign of illness at this point. so what happened? what's going on? any ideas?