I've had this flock for about 3 months. It started out OK. 5 hens of different breeds, one being a Polish. Easter egger, Moran, Orpington, Brahma, round out the flock of hens. The rooster is a barnevelder. They're all about 8 months old. The rooster came first, then all the hens. About 6 weeks ago they started to not get along. About the time the rooster became active. The Polish won't leave the coop during the day, all alone. At night the Polish waits til the rest are on the roost for quite a while before joining them and often she will not eat when they're around. She is super sweet to me. But is either fearful or aggressive with the hens. and the occasional attempt to go in the run, the rooster chases her out. Individually they are all friendly and the Polish will jump in my arms and stay there as long as I let her. However I have seen her peck and chase a hen if one gets too close to her. Currently 3 of the hens started laying eggs. Not the polish yet. Not sure what to do? Everyone else gets along but her, amd she's also sort of my favorite. I welcome suggestions, I may be able to give her back to the person I got all the hens from if it doesn't work out but I'd rather they all be happy together.