help with RCCBs

[Sperman-508]

so im having issues with my RCCBs. i have 2 males and they are brothers. ive had them since early june...

both have bald spots on thier head, one alot worse than the other. at first it was from exesive preening but after seperating them the bald spots seem the be getting worse.

and the one with more of the balding do nothing all day, he sits perched with his head under his wing. the only time hes not perched with his head under his wing is when hes eating, and he eats alot more than his brother.

all my other finches fine, its just the CBs.
any comments or advice?
THNAKS...

[dfcauley]

If they are with their heads under their wings sleeping alot......they are sick.
I have never had my courdons to be bald.... but I would keep them seperated and give them some egg food (homeade) NV or Thirve and keep them warm with a light. I hope they improve.