Mine was pretty bad. I had some sharp metal on the property that I didn't realize was there till I ran a magnet on the ground. Here is the link to my thread. You can see what it looked like and all I learned.
https://www.backyardchickens.com/threads/bumblefoot-help-needed.1426329/
For my duck, I never got the bumbles out. I treated my duck with baytril (enrofloxacin) for five days. I could have cut it open, but I was worried about making things worse. You will still need to keep an eye on it, but the baytril will kill everything in there. The dosage is 0.05ml per lb of...