Guided Birding Tour in December 2018 Gary & John from USA- 7 days focusing on waterfowls in Cheonsu bay, Ganghwa island, Han Estuary, East Coast & Jungrang river Birds list Swan GooseGreater White-fronted GooseTaiga Bean-GooseTundra Bean-GooseTaiga/Tundra Bean-Goosegoose sp.Whooper SwanRuddy ShelduckCommon ShelduckMandarin DuckNorthern ShovelerGadwallFalcated DuckEurasian WigeonEastern Spot-bill..