That's a tough call.I wonder what to do. Remove it all and risking some complications related to surgery or improper treatment after surgery, or leave it as it is and risking something I don't know about. This bird looks happy, does not show pain or discomfort, walks as a happy duck
My first inclination would be to leave it of bird can function without discomfort...
...but I suspect it may cause more problems down the line.
I would probably leave it and euthanize/slaughter later if it affects birds thriving...
...but I'm not one for extreme doctoring/treatments.