They should all get along. But as others have said, they will pick more on the polish. I have a polish in with my other chickens, and they are fine. I have been cutting her head feathers, so she can see, because it drives me nuts to imagine being her! (note: I'm probably not getting polish again. Whoever bred them up must have not been thinking of the welfare of the chicken!) I had three, but I had some young roosters that were just warming up to the hens, and they chased those polish, and they flew off, then couldn't see to get back, so they just sat back for the night, and got eaten. I lost two. I sent the third to a friend, and got her back when all was safe again!