I have hen who I believe has sour crop. Her crop was very squishy tonight. My husband and I made her vomit and a bunch of fluid came out, some feed, some bugs, but it didn't smell particularly bad. Anyhow, gave her some yogurt, and she has apple cider vinegar in her water. What else should I do? She's in our chicken hospital, which has been used more in the last week than ever. Sheesh.