At this point you may be wondering why not take the hatchlings to be adopted by another goose family. Unfortunately, this won't happen. Of these, the male goose is by far the most protective of any young, including other types of waterfowl. However, the female will easily attempt to kill any young that are not hers. So you can't throw them out with some others that have just hatched.
Adults identify their young by both sight and, more importantly, sound.
They can easily distinguish between theirs and another family. They may even fly into buildings or fences so you will have to be somewhat cautious when they first fledge. After that, they will decide what they want to do. If this all takes place at a time between the migration of flocks flying over, they will probably stay around until they see that first flock fly over. It is at this time they will be looking for mates and will just as likely join the flocks they see flying.