I have been trying to cure my BR hen for a week now. She has sour crop and she is on the elder side. She isn't laying eggs anymore. I had another post on here about Sour Crop but I have ran into a problem and I figured it would be easier to start a new one. I gave her JUST apple cider vinegar for 3 days. Then, I gave her plain, fat free yogurt for a few days. She would still throw it up. So I decided to let her stay on the vinegar water for a couple more days without yogurt or food. Today, I gave her a little more yogurt and a tiny piece of egg, and she threw that up, AGAIN! I gave up and tried the 'vomit method' where I turn her upside down and massage her crop to make her vomit. Not only did she not vomit, but I couldn't even feel anything in her crop at all! I don't know what to do because she keeps throwing up when I give her food but she won't throw up when I want her to! Suggestions anyone?? Thanks in advance.