History of Corvus
When Apollo asked his raven to take a sweet note from his beloved Coronis, daughter of Phlégyas & mother of Doctor Aesculapius, the latter stopped at a fig tree to eat the fruits. On his return, he took a water snake between his legs & told his master that this animal had prevented him from reaching the water source, which explains his delay. But nothing can be hidden from the god of truth, & to punish him, Apollo condemned him to no longer be able to satiate himself at the sources as long as the fig remained hanging on the tree. The god carried the Crow, the Cup & the Female Hydra (water snake) to the heavens to remember forever what it would cost him to lie to him.