I have 2 White Plymouth, pulley and cockerel, that are 3 months old in the coop/run now. Would like to know when I can add in the 7 mixed rare breeds that are about a month old? They are outside in a hutch, but are getting a little cramped.
I introduced my baby chickens to the flock when they where a month and a half old. Maybe introduce them slowly to the other chickens and monitor them to make sure the other chickens don't really hurt them. A peck or two is normal to show the pecking order, but after a little while, the other chickens should leave them alone. If the older chickens don't accept them after a day or so, keep them separate for a little longer. It all depends on the attitude of your chickens. Hope it helps