One of the 7 week old chicks has healed nicely from a head wound. He/she has spent the nights in a little bird cage inside my home but during the day he was in his own large cage next to his siblings so they have always seen each other. His/her head does not have scabs anymore or old blood. but there are no new feathers yet. To re-introduce him/here I was planning to let them free range together so he can get away if needed and they have more space and things to do. Is this too early or do I wait until his/her head has grown feathers? I am keeping the old ladies separate from them.