Querquedula, læ, f. ge. pen. co. Auis. Varro. A water foule called a Teale.
Lewis and Short: Latin dictionary
querquedŭla, ae, f. [from the Gr. kerkouri/s,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.