Laysan ducks or Laysan teal, Anas laysanensis, the rarest duck in the world ( Critically Endangered ), Midway Atoll National Wildlife Refuge, USA

Laysan duck or Laysan teal, Anas laysanensis, the rarest duck in the world ( Critically Endangered Species), the population was once reduced to 7 adults and 5 juveniles; a member of the mallard clade of dabbling ducks, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Islands, USA ( North Pacific Ocean )