I don't know the answer cause I'm in the same boat. Most of my hens ignore the littler ones, except the rooster and the lowest hen in the pecking order. They'll grab the chicks and pull out a beak full of feathers. I expected some feather loss and chasing, but Ellie & Duke are just being really mean. So I'm wondering the same thing, is this just pecking order stuff or do I need to wait longer?