I have a muscovy hen who recently has become pretty aggressive towards my chickens and sometimes even people. I keep her and a goose in a flock of hens and usually she follows the goose around but lately she and the chickens are getting into rough fights. Ive had a few problems in the past with her and the chickens, but its never been this bad. My barred rock in particular will chase her around until the duck decides to tackle the hen. It gets pretty rough and then when I pick the chicken up the duck will be bitting at my legs to try to get to the chicken. This has happened once or twice before but now its happening on a daily basis, sometimes multiple times a day. I have no way of separating the duck and I wouldn't want to send her off to become someone else's problem, so unless things get better I guess I'll have to butcher her I know that im to wimpy to kill her with a knife but I think I handling it by snapping her neck and than bleeding her out. Ive read that it takes experience before you can easily snap a bird's neck with your hands, is this true? I want to use a fool proof method so I was thinking of doing it by stepping down on a broomstick to crush her neck. I know people do this with chickens, but would a duck's neck work for it, or be too thick?