Hera (>^.^)><(^.^<)
Zeus turned himself into a swan in order to seduce Leda.
Leda.
Zeus, in the guise of a swan, tricked Leda into having sex with him. Leda then laid an egg and three children were born: Castor, Pollux and Helen of Troy.
The Swan was a transformed Zeus.
he does it at when zeus is slepping.
Zeus, at least, was rather fond of this trick. He usually did it to get his groove on with some mortal chick: Leda and the swan, Europa and the bull.
Zeus turned himself into a swan.
A swan
Leda
No, he did not.
In Greek myth there is no such "trick".
A swan.
Leda
Leda