E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A nymph, wife of Picus, King of the Laurents. When Circê had changed Picus into a bird, Canens lamented him so greatly that she pined away, till she became a vox et prterca nihil. (Ovid: Metamorphoses, 14 fab. 9.)