βοσκ-άς · bosk-as — LSJ
greedy, νηδύς Nic. Th. 782;
of birds which feed themselves, not artificially fed, ὀρταλίς Nic. Al. 293, Aët. 9.30 (cf. βοσκός II).
as Subst., kind of duck, perh. teal, Anas crecca, Arist. HA 593b17, Alex.Mynd. ap. Ath. 9.395d.