Although getting out is never as easy as getting in. But they now face a far bigger challenge. The petrel is back. They try to flee, but running isn't an emperor's strong point. A slip, it's all the petrel needs. It has the chick by its neck feathers. But the down comes away and the chick disappears in the crowd. Just as in the huddle, the chicks form a defensive circle and prepare to stand their ground.