This application containing the best collection of Swan Sounds for android devices. sounds have been selected very carefully to be a good and fun user experience, we hope you will enjoy using the app and listening to Swan Sounds swan, largest waterfowl species of the subfamily Anserinae, family Anatidae (order Anseriformes). Most swans are classified in the genus Cygnus. Swans are gracefully long-necked, heavy-bodied, big-footed birds that glide majestically when swimming and fly with slow wingbeats and with necks outstretched.