Polish always do better with another Polish around. I NEVER recommend people get only one or two Polish in a mixed flock of many other breeds, or they will get picked on as I've heard of and seen of too often. The reason is actually because of their differences. Mine don't get picked on, but likely because mine are tough by nature and also because the ratio is really good. I've got over 15 Polish in a flock of over 30 hens.