At the dawn of the 2000s, the Regional Natural Park of Vercors participated in an operation to reintroduce vultures fawn on the scale of the Pre-Alps. These birds had disappeared from our mountains in the 19th century. By relying on the population of the Grands Causses, the idea was to exchange (birds, and therefore genes) with the Pyrenean populations. A vast population occupies a space that goes from the Spanish Pyrenees to the Vercors, which the birds traverse freely (the observation of the banded birds proves it to us). The Col de Rousset and the circus of Archiane are two sites of rest and nesting for these great gliders (almost 3m of wingspan). They use the ascending currents along the cliffs to transit from one to the other. A large shadow on the ground, raise your head, a vulture passes over you ...