I'm a chicken newbie so please bear with me in case I'm just being crazy. I have 4 BO's, 18wks old, and just about every night the head hen is chasing one of the others around before bedtime (always same girl). I think it is to get her to go into the coop. Once she gives up the running and goes in everyone settles down pretty quickly. Is this normal head hen behavior? My girls usually go into the coop between 8:30-8:45 each night and she is the last one on the roost. I also have one chicken who I think may be challenging for head hen sometimes cause there will be a racket and then next thing you know the chase is on until she gives it up and jumps onto a low outdoor roost. I have looked in the 2 books I have but still not sure if I need to worry about the chasing. No feather loss or pecking that I have seen so far. They are well fed and live in a 4x4 elevated coop inside a 10x10x6 chicken kennel with shade cover. Any info anyone could give me would be appreciated. Thank you in advance.