Hello to all, can someone tell me if my 3 months olds will bother the 8 week old chicks. Should I keep them in a cage and then put them in there? I have four 3 month old RIRs, four barred rocks 8 wks old, four buff orphingtons. They all have full feathers and I will be using a heat light at all times for them in coop. thank you for any feed back.