I was given three birds that are having a skin issue, and I'm looking for advice. The birds were all healthy according to the former owner until recently like the last few days. All three birds have to some degree mild to very severe yellow crusty to mushy areas on the skin. The one bird that it is mild on is only on her feet and backs of legs .. the bird that is most severe is covering pretty much covering the whole body but there is no feather loss. I have the birds totally QT'd like so totally that they are across the road at a friends who no longer does poultry but has a coop still. Before putting them in the coop we bathed them really good using dawn dish soap I did not notice any bugs crawling off them during this but some of the yellow stuff came off the skin during the bath. I followed up the dawn with a thorough washing (with gloved hands) with anti fungal / anti bacteria shampoo, then they got rinsed really well and since it's warm out put into the coop. I have Eprinex pour on and am considering putting that on them as well just in case it is mites and I didn't see them in the water due to all the other dirt that came off the birds. The only other thing to note is the birds SMELL badly even after a bath the odor from them will make you gag if not in an open area. We are bleaching all the towels we used to dry during the baths and have bleached the tubs out already, we wore gloves and changed clothes before coming into contact with any of our flock at home. I put Poultry drench into their water and fed them after their baths, all three are acting like normal chickens none are lethargic or anything of that nature. Thank you in advance for any and all input on this issue.