I have 3 new little ducks that will be a week tomorrow.One has a piece of egg shell stuck in its belly button.I had tried to get it out right after birth,but it started to bleed.I put some flour on it to stop bleeding.It did stop and now the piece of shell is stuck in there right on.It is a small piece.But when I try top take it off gently,it crys.Does anyone have any suggestions,Sandra