I have a silkie rooster who has a respiratory illness. He is very crackly and congested. I tried Baytril Injections 2.27 at 0.3 ml once a day. After 4 or 5 days I tried .5 ml twice a day for 3 days. Nothing changed in his condition at all. I gave him some probiotics for a few days and then started him on Oxytetracycline powder in his water. Again after a week nothing has changed in his condition. His bowl movements are normal, his eating habits are normal, he is just super congested. Where do I go from here? I have Tylovet 50 injectable, Gallimycin powder, and Sulmet liquid. He is quarantined in my home. Thanks for any help you can give.