Mariana mallard

The Mariana mallard or Oustalet's duck (Anas oustaleti) is an extinct type of duck of the genus Anas that was endemic to the Mariana Islands. Its taxonomic status is debated, and it has variously been treated as a full species, a subspecies of the mallard or the Pacific black duck, or sometimes as a subspecies of the Indian spot-billed duck.

Mariana mallard

The Mariana mallard or Oustalet's duck (Anas oustaleti) is an extinct type of duck of the genus Anas that was endemic to the Mariana Islands. Its taxonomic status is debated, and it has variously been treated as a full species, a subspecies of the mallard or the Pacific black duck, or sometimes as a subspecies of the Indian spot-billed duck.