Help! This is my first year raising ducks. I have 4 mallards - 2 drakes and 2 hens. I also have 2 Peking - a drake and hen. The drakes are attacking each other. The Peking drake was pecking, chasing and attempting to drowned 1 of the drake mallards. I isolated the Peking drake. Now the other Mallard drake is attacking the same drake. Will they stop? I'm afraid they will either kill the bullied drake.