Guided Birding Tour in March 2018 Dale Herter from USA- Ganghwa island & Han river estuary, South Korea in March 2018 - High-light bird list Greater White-fronted GooseTaiga/Tundra Bean-GooseCommon ShelduckNorthern ShovelerFalcated DuckEastern Spot-billed DuckMallardNorthern PintailGreen-winged Teal (Eurasian)Great CormorantGray HeronGreat EgretEurasian SpoonbillCinereous VultureWhite-tailed Eag..