Guillemot chicks have to take a daring first flight from their cliff-edge nests to the open ocean. Dangers lie between; can they evade the hungry Arctic foxes below? Subscribe: bit.ly/BBCEarthSub #SpyInTheWild #ArcticWildlife #Fox Watch more: Planet Earth bit.ly/PlanetEarthPlaylist Blue Planet bit.ly/BluePlanetPlaylist Planet Earth II bit.ly/PlanetEarthIIPlaylist Planet Dinosaur bit.ly/PlanetDinoPlaylist Taken from episode 4 of Spy In The Wild Series 2 Spy in the Wild returns to explore mass gatherings among the animal kingdom as its even more lifelike spy creatures infiltrate communities and take you into the heart of the action. Why do animals gather for one-off events? What does it feel like to be part of the herd? And how do they cope with the changing seasons and climate? Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking na...