
Migratory birds make long journeys between nesting sites and wintering sites. Many migratories reach Europe from Africa in March, some using the position of the sun and the mountain ranges as a reference (diurnal migration), and some the moon and stars (nocturnal migration). The return journey takes place in the months of September and October. The Bocchino di Semola is an important passage in the migratory routes that cross the border between Liguria and Piedmont.[On-site information panel, text by Fabiano Sartirana]