I have two female geese one is 7 and one is 3. They get along well and are happy. Someone just gave me two new geese that look about 6-10 weeks one of them looks a good bit larger than the other. My question is, how should I introduce them? Will they fight? Should I even introduce them at all? assuming One of the new ones is a male, can I keep 1 male with 3 females?