Classical Mythology and Ancient History > metamorphoses ~ classical mythology > metamorphoses of female persons into birds > metamorphoses of female persons into birds (second series) > Philomela, Procne and Tereus changed into nightingale, swallow, hoopoe (or hawk): Tereus seeks to kill Philomela and Procne for having slain his son; in their flight the two sisters are changed into a nightingale and a swallow; Tereus is changed into a hoopoe or a hawk (Ovid, Metamorphoses VI 668)