While putting the girls back in the coop after their free-range time, I noticed one of my oldest hens favoring one of her feet. The bottom of the foot looked swollen, so I caught her and flipped her over to have a look. The pad on the bottom of her foot is swollen, and she has a large scab-looking thing covering a large area of the pad, roughly the size of a nickel. I picked at the scab for a moment, but it was on tight and seemed to bother her, so I left it on and smothered the area in betadine. I checked her other foot and noticed a very small hole in the center of the pad, which looks like a smaller version of the same issue. She didn't seem to mind me picking at this scab and wasn't favoring this foot, so I removed the scab to look at the area. NOTHING appeared to be wrong within the hole, just raw pink skin. I smothered this area in betadine as well. I checked her all over for mites, but she was clean, and I've never had a mite problem. I caught several of my hens, and one of the other old hens had a tiny scabby hole on one foot, but did not favor the foot or have any swelling. My old cochin and old rooster have no problems, nor do any of the younger ones. These two hens are probably about 8 years old. All of my girls are on laying pellets, get 2 hours of free-range time daily, and get cracked corn in the evenings, as well as table scraps. Their run has been damp in a certain area for about a month, due to lots of rainfall and apparent hatred of their hanging water container, which they seem to get a thrill out of tipping over. They also have a water container that stays on the ground. Any suggestions? Has anyone ever had this problem before? Thanks so much!