I have two mature hens (1 Isa Brown & 1 australorp). I raised 3 silkie chicks and want to eventually merge them all into one coop. I’ve kept the silkies separate and at about 4 months old started putting them together under supervision. The mature hens are constantly bullying the silkies and I don’t think they can safely go in the coop together. It’s been about 2 weeks and hasn’t gotten better. Any tips? Or do I just need to to wait for the silkies to be older?