I've been nursing a chicken with sour crop for 5 days now. I've done the vinegar/water, yogurt, bread & oil, egg yolk, softened pellets. I've massaged her crop several times a day. She has spit up brown-stinky liquid. She is still pooping-watery brown/green/white. I noticed today her comb/waddle is beginning to become less red. Drugs are the next step but my vet doesn't know how to treat sour crop. He would help me if I could tell him what to use. I've looked it up but I get confused what to use & how much. she weights about 4 pounds now. Is it too late for drugs? Do I keep trying?