I have a RIR rooster 16 weeks old, he does not crow and seems very healthy (eats well, normal poop, very friendly). He continually makes this squeak/hiccup sound. He has no nasal drainage, eyes are bright and clear, he is just making this weird noise. Is it something like a cold or is it something serious, none of my other chickens make this noise except when we are playing with them. This particular rooster has been a victim of bullying from other members of our flock (17 hens and 10 roos), he will be getting processed soon, just waiting until the weather gets cooler. Any insight or info would be greatly appreciated, thanks.