I have a 7 month old pullet that has been sneezing for 2 months now. No other symptoms, just constant sneezing. Now she has developed a messy butt. I don't see any diarreah in the coop, just on her feathers. I lost another pullet, same age, last month with no symptoms other than a messy butt. They were wormed last month when the other one got sick. They don't free range, no change in food, plus my key west chickies are fine. Nothing has changed, except the weather. I got these pullets as day old chicks from a lady that I believe takes wonderful care of her birds. But out of the 7 I kept, I'm down to 3. They keep mysteriously dying. So is it time to get some antibiotics? I hate to use them if I don't know what I'm dealing with but I don't want to lose another one. No vet around here will look at chickens. With the last one I isolated her, wormed her, gave her acv, fed her eggs and blueberries, only thing she would eat. She died after about 4 days. She only had a messy butt. Anything I can try with this one?