I have 1 Rouen Drake and 4 females (1 Rouen, 1 Blue Swedish and 2 Pekin), my friend who is moving out of town is giving me his 1 year old Cayuga drake. I really like the Cayuga. However, I wouldn't know what to do, are 4 ducks enough for 2 drakes? I know there will be fights. Will they settle down after a while?