My chicks are 6 weeks old so we're newbies. One of them we believe is a Golden Penciled Hamburg. He has 3 patches where he has no feather and I just spotted them today. I looked around the vent and didn't seen any mites. I isolated him from the others in case they were pecking him (he/she is the feistiest so that seems hard to believe). What do I do now? Should he be isolated alone or should I bring in the most timid chick to keep him company? I need any ideas anyone can offer!