The Quackers were in our yard again today. While we would have loved to have kept them there, we were worried about predators (crows, hawks, outdoor cats, etc.) gobbling them up.
We called Mary, a wildlife rehabber, who met us at the nearest pond. The pond had other mallards and even another mother duck with little ones. Mama (Saltine) and the ducklings (Graham, Keebler, Triscuit, Ritz and Oyster) walked out of the box and happily swam away.