(Ἀκανθίς, ‘siskin’ and Ἄκανθος, ‘goldfinch’). Daughter and son of Autonous and Hippodamia, sisters of Erodius (‘Heron’), Anthus (obscure bird-name), Schoineus (likewise). When the mares from the father's horse stud pulled Anthus apart, the family grieved for him, until out of compassion Zeus and Apollo transformed them all into birds: the parents into a bittern and a crested lark, the children into the birds whose names they bore (Anton. Lib. 7).
P.M.C. Forbes Irving, Metamorphosis in Greek myth, 1990, 224 f.