In their annual end-of-summer display in the skies over Israel, more than 500,000 white storks recently completed their migration south.  Israel's location on the only land bridge between Europe, Asia and Africa make it uniquely suited as a birdwatching site from which to witness the flights of a large variety of migratory birds.  From such popular areas as the Hula Valley in northern Israel and the fish ponds at Kibbutz Ma'agan Michael (pictured), visitors to Israel can see the migration of more than 400 different species of birds throughout the fall, including rare raptors, pelicans and, finally, cranes, which complete their migration in December.