anatarius

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

ănătārĭus, a, um, adj. [anas],

relating to a duck : aquila, the duck-eagle , which stations itself by the water and carries off ducks: Falco haliaëtus, Linn.; Plin. 10, 3, 3, § 7.