Our 2year old rooster started wheezing about a week ago. He otherwise behaves normally, eating, drinking, lively, bright eyed & bushy tailed, no drainage or sign of fever. 1 nostril is dirty - he loves fruit & then forages so the dirt is certainly stuck on 1 nostril - I've tried to clean it with warm damp q-tip, but it's not perfectly clean. I don't want to assume it's a blocked nostril causing the wheezing - I'll keep working at cleaning the nostril, but if this is a sign of illness I need to treat, I'm hoping someone will guide me. I have Corid solution I used last year for a different chicken. Wondering 2 things - would it be good for me to dose him in his water (he's separate from the hens most of the time because he's kind of a jerk) prophylacticlly and, 2, is the Corid still good? It's been stored at ~65deg dark, never contaminated, but there's no exp date on the package. Thanks. Even though my rooster is socially inept, I still love him.