Thank you everyone!! Wow,was he hungry.....Mites,what should I look for ? I did see a patch of missing feathers on his back,by his tail feathers..I hope he does not have mites and pass it to my delaware.
look closely at the skin especially around the vent. mites are very tiny moving dots. wild birds can pass them to your birds. his rough feathers might be from them. If he does have them I would give him a bath in flea shampoo ( keep out of eyes) or use adams flea and tick spray. I regularly treat my silkies for mite.