It depends on how old the baby geese are. Most birds hatch from their eggs with a yolk sac attached to their belly. This sac has a lot of nourishment in it and the hatchling relys on it for the first few days. Once it is depleted then the hatchling relys on the parent birds to bring food back to the nest. If these are wild geese then you need to contact a wildlife rescue group in your area so these birds can get help before it is too late. Good luck!