From the Col du Vallon, you can sometimes see griffon vultures. The bird returned to the mountains a few years ago. Bigger than an eagle, with beige and brown plumage, it generally glides in flight, and its movements are broad and slow. But what characterises the species above all is its gregariousness: griffon vultures like to be together, whether on the ground or in the air. This behavioural adaptation makes it easier for them to find the animal carcasses they feed on.