If I could find the people who dropped off the baby rabbits in the Park, I would have them arrested. These were probably Easter gifts to children. They are not wild rabbits but "breeders rabbits" and were taken from their mothers too young. Rabbits are delicate creatures with delicate digestive tracts.
These poor babies will have a hard time surviving. There are about 15 of them. The closely clipped grass of the Park does not leave much in the way of nutrition for them, plus they must put up with wild children, dogs and, worse of all, people who have no respect for life.