Muscovy duck....

The domestic subspecies, Cairina moschata domestica, is commonly known in Spanish as the pato criollo ("creole duck"). They have been bred since pre-Columbian times by Native Americans and are heavier and less able to fly long distances than the wild subspecies. Their plumage color are also more variable. Other names for the domestic subspecies in Spanish are pato casero ("backyard duck") and pato mudo ("mute duck").