My hen, Prissy, has had this growth for several months. It is hard, not fleshy. It started about the size of a dime, now like a large grape. It bleeds occasionally, but profusely. (lots of blood in the coop in the morning, and matted in her feathers, etc.) She does not limp, she was laying normal eggs. (until they all started molting about a month ago.) She socializes with all the other hens, until she recently started to POSSIBLY seem to be moving a bit slower. She is very sweet and friendly and doesn't usually run away like the others anyway. I brought her in today and washed her legs and inspected her very closely- this is very isolated. She has some areas of feather loss, but is molting. (new feathers coming in in most areas) I added a picture of her face because i think her eyes and comb look normal (for a molting chicken.) Has anyone ever experienced this? Im wondering tumor v. infection, and what do do about it. Thanks everyone.