Metamorphoses Book 13: Memnon
While many pitied Hecuba, a lesser-known goddess, Aurora, mourned her son, Memnon. He'd been killed by Hercules, and she asked Jove that Memnon be remembered in some immortal way. So Jove took the smoke from his funeral pyre and created a flock of birds that divided and battled each other until they fell into the ashes from which they'd been born. Each year the birds fight in memory of Memnon and his mother's tears of mourning are dewdrops.