Could it be Mareks?

[Chickrose]

I have a banty cockeral about 11 weeks that for about the last 4 days has had trouble keeping his balance. The rest of the birds are doing fine. Someone told me it could be a sign of Mareks, is that true?

 

[DuckLady]

That is definitley a sign of Mareks. Was it a sudden onset or gradual?

 

[Chickrose]

Terrielacy, thanks for the reply. I have not been able to check back in for some time. Yes, the symptoms came on very suddenly. I notice now that he seems to be holding his wings out and down a little bit. What do I do? are the rest of my birds doomed? Help?!!!!