My little bantam cochin rooster has been congested and sneezing going on 2 weeks. I have been watching him closely. He is still active, happy, and eating well. None of my other hens are affected. I hate to medicate unless absolutely necessary, but I broke down over the weekend and purchased a small bag of tetracycline. I am not even sure it will be effective. Should I medicate him or does he just have a cold that will eventually get better on it's own?