As the barnacle gosling grows to about a few days old, it has to jump off its nest in order to reach the grassy feeding ground below. The Mother geese will call out to their chicks to take a leap of faith down.
Barnacle geese nest their home up in the cliff to avoid predators and the parents don’t feed their young. Thus the only way is for the gosling to find food is on the ground.
In this short film by BBC, entitled Life Story by Sir David Attenborough, shows a barnacle gosling jumping down 400 feet from its nest. Since they are still very young, the best chance of surviving is to tumble down and hope that they will land on their soft belly.