I lost most of my ducks because they wouldn't come home at night from the creek!!! I called them and couldn't chase them back--they would just cross the creek and go farther away!!! My bigger ducks chase the smaller ones, so the smaller ones stopped coming home. I have magpies, pekin, 2 other drakes--size of pekins, 1 muscovy drake, and Swedish blues. I started locking the magpies up, so I wouldn't have any more killed! But I would like to free range them! I have had ducks and chickens killed by coyotes during the day!!! Hate that!!!