I have a girl with sour crop. So far we have rubbed her crop which then she threw up at least 3 times. Her crop still felt like a balloon with water it. But not as big. But she still wasn't doing better. Then used a dropper with oil and put it in her throat the way I read about it. And tried some boiled rice too. That she didn't eat. We have her secluded from the others. I don't think she's doing worse by no means but just wish I knew if she was going to be ok. Dummy me thought that if you gave them oyster shells they didn't need the grit so I had not been giving it to them for at least two months. Once I found out I was wrong I started again about a week ago. I am so new at this just never know what is the right thing or wrong thing.