Leda – according to the most familiar tradition, Zeus,
who had fell in love with Leda, changed himself into a swan in order to
unite with her. Leda put 2 eggs, from which emerged Dioscuri
and Helen, the future Helen of Troy.
See: Paul Cézanne. Leda
with Swan.
Correggio Leda
and Swan.
Leonardo da Vinci Leda
and Swan.
Henri Matisse. Leda
and the Swan.