Beautiful long tail

They are migratory birds that fly to Japan in winter and are often seen in the same places as swans.
Some ducks have males with showy-colored feathers to attract females during the breeding season, and the male Northern Pintail also dresses up with long tail feathers and beautiful plumage during the breeding season. However, if they continue to wear flashy colors, they are more likely to be targeted by natural enemies, so after the breeding season, they change to a more subdued coloration known as the eclipse type.

They look very cute walking around with their tail feathers shaking.