My BO that we've had for 18 mo. now is wheezing, sneezing and coughing. I treated her with Tylan 200 injection 2 days ago, and this evening gave her the 2nd dose by mouth. (I'm not good with needles, and realized my limitations with this experience). She seemed to be improving a slight bit - but took a turn for the worse an hour ago when I heard her wheezing from the coop. Outside temps are only in the mid 60's, but I brought her into the washroom and put her in a separate cage with food (yogurt & lay crumble), and water with electrolytes in it anyway. It kills me to hear her like this, and I want to help. I just don't know how. ANY advice would be appreciated.