We have 2 welsh harlequins with liquid diarrhea and both limping on left leg. Eating drinking well. Wants to be active but as day goes on limp gets worse. 6 months old, laying an egg daily, but diarrhea going on for about a month. No exposure to toxins or other farm animals, bedding changed daily (shavings) water/food bowls cleaned daily. Feed in airtight container and getting layer feed. Freely roaming on an acre of grass. Total 4 laying ducks, and 4 ducklings 2 months old. Questionable if 2 khaki Campbell's consistently have diarrhea but ducklings normal play dough poop and house apart from laying ducks. Very worried they are sick and since we are new at this I feel horrible that I just don't know! We are using a separate well that is untreated and did test positive for chloroform but told probably a contaminant at end of faucet ok to use for ducks. Is this true? Help!