Hello everyone...I have a 1.5 year old white leghorn hen that has the dirtiest back end I've ever seen on a chicken. She is very healthy, eating & drinking great and laying a nice, big white egg every day. She has just started laying again after going broody (I was amazed, never had a leghorn go broody!) and raising a clutch of six chicks. She has had a runny bottom since she was about four months old, but it went away when she was broody...I have a flock of over 25 birds, mixed breed and ages, and she is the only one that has this...any ideas of what it could be or what I can do to help her out? Or, I guess, whether or not I even need to do anything at all?? She is super healthy, so I don't really think it's negatively affecting her, but it looks awful. I tried to get good pictures, but she's also very quick I hope these help!