this particular bird has had no antibiotics whatsoever and is in an entirely different pen from the others with respiratory illness. I just don't know what to do anymore, if its not one thing it seems to be another! I am so distraught and depressed over all of this. I looked for corid today when I went to the feed store, all they had was gallon size for $90. Way out of price range for one bird. She is in a pen with one other chicken, probably the one that all of this came from, i dont know. I will NEVER take a free chicken from anyone ever again!!