What most naturally follows?

How to take care of ducks
House your ducks in a secure pen.
Ducks require a safe structure to live in. An enclosure or pen will keep them from wandering (or flying) away from your house and allow them a measure of safety.
You can erect a suitable enclosure using chicken wire or another fencing material. If the ducks will be spending their days in this pen, it should provide 1.5 square meters (16 square feet) of space per duck.