My Black Australorp 6 mo hen apparently has sour crop. Two days ago, I noticed she was jerking her head a little bit and when I picked her up, her crop was very squishy. At the time, I didn't realize the problem. She seemed to be eating, drinking and laying. When I felt the same thing this morning, only possibly a little larger, I was alarmed! In searching for answers, I was directed to this forum. After reading quite a few similar situations, I first want to thank everyone here for posting such good information. Now, I want to make certain that I am dealing with this correctly. From what I've read, this has been handled in similar manner by many people but also somewhat differently. I have brought her into the house since it is quite cold here right now. This way she will not have access to any feed and will also be warm and safe. The chickens are fed layer crumbles in a self-feeder. I also hand feed them fresh bread morning and evening and have been giving them a little (handful for 4 chickens) Red Rooster Premium 5 grain feed. They also have oyster shell as free choice. They do not have grit except from their own scratching outside. My main question is on the massaging and holding the chicken upside down. I have done this twice today with quite a lot of liquid coming out. It worries me that I may cause her to aspirate some of the liquid. On both occasions, she has coughed but no gurgling or lingering effects, it seems. I have withdrawn all feed and have added ACV to the water, although it is the ACV from the grocery store. There continues to be some liquid in her crop tonight. I have also used a needleless syringe to put some vegetable oil into her mouth. It was approximately 3 cc. Question: Do I continue to massage and try to get her to vomit until there is no more liquid? Question: Is the grocery store ACV adequate? I have never seen ACV at the feed store but I will call them tomorrow. Question: Should I take the feeder out at night so that their crops have a chance to empty? Question: Should I stop giving them the 5-grain feed? Thank you for any suggestions or help you may be able to give. As with all on this forum, I love these little birds. I regret that I didn't react the first time I felt the squishy craw but now I know.