One of my amberlinks attacked one of my black stars earlier this week. She's (the amberlink) always been a more dominant hen. I'm not sure why she attacked, always have food, water, treatballs, option of going outside. I have separated the amberlink, how long should I keep her out before trying to reintroduce her? Anything else I can do to try to calm her down. I'm still handeling her a few times a day.