ok im very n ew to raising chickens. I went to a school fete to get the kids out of the house and came home with 4 Astrolorp chicks. They are all different ages. Cloe being the oldest she was the bigger of them. Baby is he 2nd oldest. Just in the last week I've started putting them outside. Baby seems to be the one goes out 1st, then if baby wants them to stay in the coop she will chase them back in there. All 3 are a bit scared of Baby too. Baby seems to be the one that watches out for threats as well.
behaviour is that baby comes out 1st and won't let the others out. If they try to go out they basically get in trouble and get chased back inside. The only way they can go out is if I guide them out myself and if they go away from me Baby will chase them back to me.