We just got out baby ducks a week ago Thursday. Everything has been great until this evening. One of my babies cannot stand up and walk and when I went to check on him again two of the others were biting at his limp foot. I resorted to bringing him in the house away from the other ducks but he is not very happy about it and hasn't stopped making noise since I brought him in. Any advise on how to help my little guy would be very much appreciated!!! Thanks in advance!!