We're releasing mallard wild ducks back into the wild.....?

plan is to release them as soon as they have flight feathers and can fly. Ducks have now proved they can eat small fish, all types of greens found in the wilds, snails and bugs...ok my question is this...we wanted to release them in a small wild pond and be able to keep an eye on them to make sure they are doing good in the wild but this pond is not where the flooded nest was located....will the mallard try to get "home"?? If so will they fly there or try to walk??? If we do show up at the flooded nest where they were found as eggs, will the law have anything to say in the matter???