Both baby ducklings and goslings are waterfowl and will eventually appreciate a water source to bathe and clean their feathers in. You don’t have to worry about that during the first few weeks of their lives, and we don’t recommend adding a large water bowl to the brooder (to prevent a big mess and your chicks from drowning). However, once we moved our chicks and goslings to the mobile chicken tractor, we offered them a container filled with water once a day and they seemed to like it. As they age, you can use a kiddie pool or livestock water tank if you don’t have a pond your birds can access.