Poor old Queen Charlotte our Rhode Island Red has sour crop. On Thursday it was hanging low and very sloshy. The vet emptied her crop and gave us Avipro plus. Her crop has not filled as much as before but today it was still quite sloshy and I emptied a fair bit from her. Does anyone have experience of this and how to get on top of it? Other than the crop she is fine, eating well, good comb, laying still. I don't want to go over-board but would like to clear up the sour crop as it is really hanging around.