So today I noticed on my hens wing, a big hard mass, kind of like a scab, but thick like golfball sized. It has drops of yellow serum on it. I had this happen to the breast of another chicken years ago. It is awful feeling, very hard and lumpy. It does not seem to bother her, and she is acting fairly normal otherwise. Is this like proud flesh on a horse? Should I put Neosporin? or Betadyne on it? Is it a cancerous growth?