I have one hen for sure that has the same thing. Only just noticed because she's having problems with her backside, possibly prolapse. ?? I have to check the rest of my girls tomorrow to see if they have the pox, also. I'm glad it's the dry so it can run it's course. I didn't know chickens could have soooo many problems, but, you know, I wouldn't change a thing. They are such a joy to have around..and the benefits of the eggs are wonderful!! I just hope my sick one makes it..