A large shelduck, Tadorna radjah, having a white head, neck, and underparts, except for a chestnut band across the breast, and a dark chestnut back, found in northern Australia, New Guinea, and the Moluccas.
Origin
1960s.
Definition of raja shelduck in US English:
raja shelduck
noun
A large shelduck, Tadorna radjah, having a white head, neck, and underparts, except for a chestnut band across the breast, and a dark chestnut back, found in northern Australia, New Guinea, and the Moluccas.