I recently moved into a house where the previous owner kept many different kinds of Chickens, but left me about 20 of the full sized Polish chickens. My question is, can I let the mothers raise some chicks by themselves? I have heard that the other adult chickens will peck the chicks but from my research I have seen that that isn't as likely to happen with a big enough pen.. and my pen has a few hiding places if that happens. So tell me if its possible, when I should try it as far as seasons go, and any other tips!