I have a young EE rooster who has had a runny nose and sneezing for about 3 weeks now. He is quite congested and it crusts up. No smell to it at all, and it's clear. He is breathing fine. But he also sneezes all the time. It's def more than "just sneezing", I'm certain he has some illness.. but it doesn't seem to do much else to him. He eats, he drinks, he sleeps.. He's been in quarentine for nearly 3 weeks now.. there has been no realy change in his symptoms.. Not for the worse or better. What do I do? I don't want him to infect my other birds..but he can't stay in the guinea pig cage forever..