I don't know where you are, but here's something else to try. When we first got chickens years ago we called the Ohio State University for help because back then there was very little resource for chicken first aid. OSU has one of the best vet schools in the country, if not the best. They have instructors there that are poultry experts, and they might give you some insight, and advice, over the telephone. You can try any college, but that's the one we called. Course, they may not be able to help much...but it's sure worth a shot, and it's free.