Flocks of storks pausing at CERN before migrating southwards

A group of storks taking a pause at CERN before continuing their southward journey. Usually, storks migrate twice a year. The first trip, the prenuptial migration, takes the birds from their wintering grounds to their nesting grounds. The second trip, the postnuptial migration, goes in the opposite direction and takes the storks to their winter quarters. It is most often seen around the end of August, beginning of September.