One of our female pet ducks has been strange for the last 2 days and not really eating. I checked her over today and she has 2 dark golf ball sized lumps on her rear. One almost looks like it has a duckling face. When I tried to wash her and sanatise the area she was clearly in pain. I've looked everywhere for any suggestions of what it could be and no success anywhere. We will get her seen too but shes quite distressed and in pain so don't want to move her just yet. Happy to send photos individually but it's a bit too graphic to post otherwise.