Hi! We're new from RI and have a rooster who's doing terrible! Thought he may have respiratory infection so I read all the posts I could and have given him 2 injections of Tylan 50 yesterday and last night. He looked so much better this morning. His breathing improved dramatically, waddle turn from a dark purple back to a bright red and he was eating on his own. Gave him another injection this morning, Checked him early afternoon and seemed good. Just came to check again and comb turned color and his breathing is labored. Doesn't seem to have anything caught in his throat that I can see but that's all I can think of. Been giving him water with electrolytes and some yogurt. It's just terrible. He breaths are so labored and then he squaks like trying to scream. Anyone have any ideas?