I have nine existing chickens... 3 Red stars, a black sex link, 2 jersey giants, 2 americanas, and a silkie (all hens). They are all between 3-4 months old. The giants being the youngest, just now starting to outgrow the rest. Yesterday the lady I buy my exotic chickens from gave me a mille fleur d'uccle hen. I also have a young silkie about the size of her. I waited until it was past roosting time to let my existing flock back in their coop for the night with the two newbies after free ranging all day. They didn't pay any attention to them. This morning I went out and let them out about 7:00. This evening I put them back a lil early to see what would happen. They first went and ate and when one (new) would walk close to the feeder they would chase it and peck it. They even started pecking the existing silkie like they didn't recognize her. But the mille fleur hen was getting the worst of it. They even pulled out a couple feathers. She has an advatage though, she can fly to get away up on top of the nest boxes. So my question is, will they eventually stop picking on her? If they do, when can I start letting the new ones out to free range as well? I put a couple hiding places in there where the big ones can't fit. Also, I have six young about 6-8 week old polish pullets... When can I introduce them? Any suggestions would be great.