50 migratory birds were gathered near the swamp. Once the reporters approached, they flew off. Approximately 20,000-30,000 migratory birds, included bean goose, spot-billed duck and rare white-naped crane, come to Janghang swamp every year. By Bang Jun-ho (The Hankyoreh).
http://english.hani.co.kr/arti/english_edition/e_national/623575.html
