Source : Webster's Revised Unabridged Dictionary (1913)

Anatiferous \An`a*tif"er*ous\, a. [L. anas, anatis, a duck +
   -ferous.] (Zo["o]l.)
   Producing ducks; -- applied to Anatif[ae], under the absurd
   notion of their turning into ducks or geese. See {Barnacle}.