Aggressive ducks

[Pturn]

What can you do with an aggressive duck? I have 4 ducks, 2 turkeys, & 20 chickens, one of my ducks is aggressive to one of my roosters they grew up together & now my duck will chase him around pull his tail feathers & yesterday I caught him with the rooster in his mouth shaking him lik rag doll, this is new to me, the duck is kind you see at parks wit red on it's face. Help

 

[CelticOaksFarm]

drakes can be naughty, and when one becomes aggressive you can send him to freezer came or separate from the other birds. Drakes can kill chickens if they get bad enough.