Now, apparently, some people have complained about it, and he has now been banned from bringing the chicken to games. I must point out that it is a fresh chicken for each game, as he takes it home after and they eat it ("Bit of a downer for the bird", he noted :-) ). He did say that he has a stuffed pheasant at home he was thinking of bringing as a replacement, but he thought it would probably get the same treatment.
I also recall a set of English supporters who apparently travel to one of the lower division Scottish clubs with a frozen fish (Called Eric); the fish would always have it's own seat, but again, I think the club in question (can anyone out there verify this ?) objected.