Indian Runner Duck

These domesticated breed of duck stands erect and runs instead of waddling. They were found on the Indonesian islands of Lombok, Java and Bali where they were 'walked' to market and sold as egg-layers or for meat.
These ducks do not fly and only rarely form nests and incubate their own eggs. They run or walk, often dropping their eggs wherever they happen to be. Duck-breeders need to house their birds overnight or be vigilant in picking up the eggs to prevent them from being taken by other animals.
The family in the picture may be a mixed family where the father is not an indian runner, as some of the babies did not stand erect. The black baby did. Looking at the fluff in the back of one of the other babies head I suspect the father may be among the group presented as next spotting.