I have nine existing chickens (3 red stars, 2 jersey giants, 2 americanas, a black sex link, and a silkie). They're all hens. I just added a mille fleur hen and a young silkie probably 3 months old. I have 6 polish that are about 2 months old. They are a lot smaller than anybody else. When should I add them and how should I go about doing it? The existing nine I let out every day to free range while the new two stay locked up in the coop. But they've only been in there two days and am still having issues with the big ones picking on them. I don't want my polish to get killed by the big ones, but their chick pen is getting too small. Help would be great.