Hi
please help
I have 3 male chipmunks of which are 15 months old and all been reared together,[ two are brothers and one is unrelated all have got on well untill recently., my white unrelated male is being continously attacked by one of the brothers although the white one has always been the boss in the past,please what can i do to stop this,they are in a 9ftx6ftx 4ft avairy with plenty of ropes and hiding places, i know he will eventually kiull him if it does not stop.