So I've been nursing some sick pullets for a little over a week now. Coughing, wheezing, rattling in the lungs, watery eyes..... Was thinking maybe I was dealing with infectious bronchitis or mycoplasma of some sort. Another thought just occurred to me though. The chickens that are sick were housed in a tractor coop and their feed was in the run during the day. I noticed on several occasions that moldy spots were showing up in the grass where food had spilled out of the feeder. Dew in the morning caused a white mold to grow, which I just raked up and forgot about. Could this be what is making 3 of the 7 chicks so uncomfortable? Since symptoms began to appear the entire flock has been given duramycin 10 for a week and now denagard, with some improvement. No deaths, but no full recovery yet either. Could I be dealing with poisonous mold instead of respiratory disease? If so, what can I do for them? I hate to cull for something that is not a true problem. Any thoughts on this would be appreciated!