I paid 300 at the vet who initially wanted 1000 for one duck who had a swelled leg...no bumblefoot. I got meds which did nothing. The swelling went from the top of the leg to the foot. Another duck has one really bad foot and being treated for bumblefoot but foot swelling has not gone down. Finally today another duck...a female, has a tumor like swelling on the side of her head. Do you think its a tumor.