Lewis Short
querquedŭla (noun F) : from the Gr. κερκουρίς, Varr. L. L. 5, § 79, acc. to O. Müller's conjecture
* A kind of duck, perh. the teal, Varr. R. R. 3, 3, 3; 3, 11, 4; Col. 8, 15, 1: aquatiles querquedulae, Varr. ap. Non. 91, 4.
Charlton T. Lewis, Charles Short, A Latin Dictionary