The crag martin

The birds that are constantly swooping around the cliff are crag martins. They are brown with a beige underside. They have built their nests under small overhangs. This species is very common in the Alps. Partially migratory, crag martins return to the Mediterranean coast in winter, where they join resident populations. So it is the first bird to reappear in the valleys of the Pays des Écrins in late February and the last to leave in October!