This is the foot of our 1 yr old comet/RIR mix hen. She is the only hen that has seemed to battle scaly leg mites. We've done Vaseline, oil, and a linement which I can't recall the name of. We had 3 hens with this problem and the other two were rid of them. Goldie (this hen) has continued to have issues on & off and we treat her when she needs it. Today though, we found her with a swollen bump on the top of her foot between the toes with the bottom of the foot swollen and having this amber colored spot on it. The spot is hard and not easily flicked or plucked off (I didn't try further once I realized how firmly it was there). What are we dealing with? I washed her leg and put polysporin on it and we have her in a private cage now (solid floor) with clean wood shavings.