I try to give the chicks, hens and roo bonding time everyday (without a cage between them). First two days were great, they showed interest in each other and were very nice to each other. Now suddenly the hen is mean to the chicks. She pecked one on the head and it ran and hid. I scolded her telling her "No, be nice." The roo seems to be the nicest of the two. Hen and Roo are 15-ish weeks.