I had a 1 year old Black Australorp develop sour crop this last spring. I called 3 vets and a local State chicken research center and got absolutely no help. One of the vets was honest enough to state that she had taken 1 hour of poultry management as an elective while in school, and that I probably knew more about poultry than she. She did however, tell me that the infection was basically the same in women and what I was telling her that my Australorp had. I bought some Monistat 5, made her vomit and made little pills that fit on the end of a toothpick. The Monistat melts right in their throat due to their high body temp. I gave her 2 "pills" a day for 4 days and fed her plain yogurt mixed with her pellets. The sour crop cleared up in what I thought was a nearly dead chicken. She then developed a bacterial infection that I treated with penicillin for 5 days. That was nearly 4 months ago and she is as good as new and feels the need to tell everybody about it (never shuts up
I would very much like to thank the poster who took the time to submit the Monistat post. Gabby is alive and doing well thanks to you.