My rooster appears to have an URI. His crow is rough and gravelly, he makes a wet sound in his throat after running (hard to describe). He is acting great, eyes and nose are clear. I am sure he has fluid in his lungs, but I am not sure what to do to treat it. I have a TSC and an Orscheln's Farm Supply near me, but neither carry the "VetRX" and the "Tylan" which were recommended to me previously. Is there anything else I can give, or do for him?