Hi I have three pekin ducks, two boys and a girl. I got a girl and boy about 5 months ago. The girl has just started laying. My other Pekin drake Fluffy has been extremely aggressive. He is turning 5 this year and has been attacking the other boy, me and sometimes the girl. At around every spring he would be a little crazy but this time he's gone to another level. The other boy has never bit me and he is so soft he never hurts anyone but Fluffy does. How can I stop him from attacking both me and the other two ducks? I really don't want to separate them because when he isn't fighting they are best friends and follow him everywhere. Thanks!