Koroneis, a princess of Phokis (in central Greece), daughter of Coroneus. Her beauty doomed her as she was pursued by Poseidon. Fleeing from the god she cried out to Athene for help and was transformed into a crow (koronis).
A Tale of Betrayal
Coronis, daughter of Phlegyas, King of the Lapiths, was one of Apollo's lovers. While Apollo was away, Coronis, already pregnant with Asclepius, fell in love with Ischys, son of Elatus. A white crow which Apollo had left to guard her informed him of the affair and Apollo, enraged that the bird had not pecked out Ischys' eyes as soon as he approached Coronis, flung a curse upon it so furious that it scorched its feathers, which is why all crows are black.