I haven't seen pox in my flock (thank god!) but I was thinking that the pics look alot like the scabbed combs of fighting roos...and that the feathers missing look alot like what happens when an agressive roo grabs a hen by the scruff of the neck and spurs scrape her.....Believe me, I have had roos fight here, and it looks like that.
Those combs look like they are scabbed. If its a viral pox, its also possible that they are run down because of stress and thats why you are seeing it return.
I have too many roos but I also have many, many hens and some land....so the only problem is the neighbors.
You have way, way too many roos. I believe that each roo needs 10-12 girls to be happy. The poor hens must be so stressed and the roos as well.
I would at least separate the roos and rotate them through the flock and see what happens.
Last year I had a bunch of little fighting roos...I ended up bringing them to a petting zoo that has many chickens free ranging on 10 acres, but before I could get there I kept them in separate cages andwent through an elaborate rotation schedule. The ones who had to stay in a rabbit cage in the barn were unhappy, but it gave everyone a rest.
In any case, you have to move some of those roos on....so either look for a petting zoo or cull them...I dont know if you can move them looking like that.
If you dont cull, you can ask at your feed shop; sometimes the guys at the feed shop will take them for meat.
If you cant stand that, then do the cage rotation until they are looking good again and see if you can pass them on as pets or breeders.
try listing them on eggbid and craigs list.
Good luck....too many roos is a problem
Oh, another thing Ive tried is to tie them by on leg in separate corners of the yard so they can come within a foot of eachother but not touch eachother. They will jump at eachother and try to fight for an entire day...or longer...and they will probably will give up eventually.
You will still have a problem with the hens tho...but a pecking order will be established and they will tolerate eachother....repeat as necessary.
That worked with my 2 original pet roos when I started out. It worked like a charm.
But if you wanted then to keep them you would need many more hens...equalling 30 hens if youre keeping the 3 roos.