Here's one of the top links when doing a search.
I read through this before I bought the first bottle.
http://www.drugs.com/vet/vetrx-poultry-remedy.html
Not long ago we had a couple of birds exhibiting something similar and a vet that I've gotten to know fairly well recommened VetRx. It's sold at TSC where we found it and not overly expensive. There are a number of ways to adminster it and the stuff worked incredibly well. I wouldn't call it...