Cross Duck（For Reference）	Comment : An individual that is likely a cross duck is sometimes observed. This is likely a cross duck between Spot-billed Duck and Mallard or Domestic Duck. Eye stripe and bill of this bird are similar to Spot-billed Duck, while its greenish face and curled tail are similar to Mallard.
Date taken : 2001.10.21	Location : Yudonogawa River	Photo by : Tetsuro Sato