I've read previous posts, and know this could be any number of things. I'm hoping someone could tell me the best first step. I have three girls, and one has had diarrhea for maybe two months? When I first noticed it, I gave her rice & yogurt, and thought it went away, but I don't think it ever did entirely. She hasn't shown any other signs of illness, and the the other two hens are completely fine. The diarrhea is the same colour as normal stool, just looser. Could it be worms? Thank you!