I found a lump on Sasha last night and upon taking her to the vet, he drained it, washed it and gave her antibiotics. He said it as CL and that it was contagious and would not heal. So we put her and her kids back with the chickens. I don’t think the chickens minded until the “kids” started climbing on the nesting boxes and dumping the water dishes. then we locked the dividing door.