We are fairly new to backyard chickens. We currently have 22 ladies that are very well loved by our kiddos. Our hens roost in a barn at night and free range all over the farm during the day. This afternoon I noticed one of our ladies limping and checked her legs and feet. Both feet had a black spot and seemed swollen, but I had never really examined their feet before, so I wasn't sure what to look for. I grabbed another lady to compare and she, too, had a black spot on each foot, but was running around just fine. Upon further inspection, we have quite a few 6-7 birds with these "spots" on their feet. Is it possible that they ALL have bumble foot and are still tolerating it, unlike our poor limping lady? What would cause this, if it is? What are we doing wrong? The idea of surgery makes me very nervous, are there any other options? I included pictures of the foot of only lady that seems bothered. Any help would be very much appreciated!