I have 8 hens and 1 rooster, all 21 weeks. For the past 2-3 weeks one of the hens, Lacy, has become terrified of the rooster. I have not seen the rooster act aggressive towards her or pick on her. The rooster has started mating with some of the hens but he is not overly aggressive. Anytime he walks towards Lacy she runs the other direction. He doesn't even have to look at her and she will go running. Anyone have any ideas why she may be acting this way?