I have ten six month old chickens, one being a silkie. I would like to get a rooster, just to discourage the cat from spending the day sleeping in the hen yard. He makes them nervous, but does not hurt them. I have been offered a silkie rooster, but don't know if that little guy will do well with the huge Rhode Island Reds. Any advice? I am not opposed to increasing my numbers, if that is what it takes. Should I get a different kind of rooster?