I raised 6 Khaki Cambell ducks. I gave away the 2 females because the ration male to female didn't work and I was afraid for the females. When left with the 4 males about a week after the females were gone the ducks went down the backyard small brook and settled in at my neighbors yard and brook I think because the water is deeper there and won't come back. I used to give them free rain during the day and then they would come to my call to go into their pen and then shed at night. They haven't come back. What should I do? I don't want to lock them into their pen all day long they love the brook and the freedom. P.s. my neighbor doesn't mind the ducks there.