Leszno is a town, located roughly between Poznań and Wrocław.
Zephyr refers to the wind, usually the west wind. In ancient Greek mythology, the four winds were personified as gods, called the Anemoi. These included Boreas, Notos, Euros and Zephyros.
XI Szybowcowe mistrzostwa świata - Leszno 1968 = Eleventh world gliding championship - Leszno 1968.
Zefir = Zephyr.
Bocian = Stork.
Jaskółka = Swallow.
Mucha = Fly.
Foka = Seal.
Pirat = Pirate.