My 11 month old black sex link hen was laying every day. Found her one morning unable to hold up head or walk. I brought her in and fed her vitimens, yogurt and electrolyte water and she recovered in a week. She is now active, eats well but she does not lay any more and face, comb and wattles have tu;rned white. Comb looks dried out and droops. What is wrong, what to do?