My chicken definitely has sour crop. I am able to make her vomit some of the nasty stuff up, but not all of it comes out. There is still quite a bit left in her crop. I put some probiotic capsules in her water and took her food away. She is separated from the others for now. I also saw that she passed some poo...it was almost the consistency of dough. She is getting around alright and isn't listless or overly lethargic. She looks deformed her crop is so large. The strange thing is, the crop bulges to her right side, so the mass is lopsided. Any advice on how to clear this up? I wish when I try to make her vomit, more would come out! Poor chicky then chicken!