Gadwall Anas strepera and Mallard Anas platyrhynchos wild ducks on a river stream in Seoul Yanje district

gadwall river stream mallard domestic duck anas platyrhynchos domesticus duck platyrhynchos pommern duck pomeranian duck wildlife environment pond swim water float animal planet strepera nature bird animals animal birds shallow land anas nat geo wild national geographic tail view outdoor park beautiful natural south korea wagging grassland stone grass breed standing korea pomeranian seoul dark sunset domesticated domestic