sheldrake

The Anas tadorna, a large species of wild duck.

Sheldrake
·noun Any one of the American mergansers. II. Sheldrake ·noun Any one of several species of large O...

Webster's Dictionary of the English Language
sheldrake
or Shieldrake n. the common English name of ducks of the genera Tadornaand Casarca. The Australian...

Dictionary of Australasian Words Phrases and Usages by Edward E. Morris