One of my hens hatched out a single chick. Due to this I'd like to integrate the chick into the flock whenever the mother hen is ready so it doesn't have to be alone. Its about three week old and has been in a sectioned off corner of the run since it hatched so the flock could see mom and chick. Today I let them in together for a few minutes and all seemed to go ok. The chick definitely had no fear and the rest of the flock hardly seemed to notice it. How early is too early to let them be together?