Serpenta

So i bought combined ops months ago to play Day Z. Everything was fine. I recently started playing normal arma 2 online and everything is fine as well. Earlier today however i tried getting in an OA server that wasn't Day Z and I kept spawning as a freaking bird. My buddy who i was playing with was able to log on just fine. Note this does not happen in Arma 2 (Regular not Arma 2 free) or Day Z servers. Does anyone know what i should do to fix this??? Any help would be appreciated Many thanks.