I have a 5-6 week old RIR. Her two companions have each died, and so now she is alone. I do have other older chickens (3 months) but am afraid to put the RIR in with them since she is so much smaller. My question is, is it okay to keep her by herself until she is old enough to go out with the others, or do I need to get a new chick to be with her for now? I have heard that chickens can't be alone. Does anyone know? Thanks!