They are a happy family in a pond. The big birds, which are pelicans and their friend swans and ducks are swimming. Pelicans are a genus of large water birds comprising the family Pelecanidae. Swans are birds of the family Anatidae within the genus Cygnus. Duck is the common name for a large number of species in the Anatidae family of birds. Other informations about these birds- types of birds, mallard duck, mallard ducks, information about ducks, female duck, ruddy duck, wood duck, duck species, types of ducks, baby duck, white ducks, mandarin ducks, black duck, pekin duck, pet duck, duck identification, diving ducks, gadwall duck, harlequin duck, canvasback duck, wild ducks, teal duck, pintail duck, all about ducks, redhead duck, aylesbury ducks, indian runner ducks.