In the twilight, Baikal teals dance in group.
They are migratory birds which pass through Korea in spring and fall.
They, as one of the rare species in the world which breed in eastern part of Siberia wintering in
Korea, Japan and China etc, appear as a group in a safe lake or reservoir during the day.
As the sunset glows they wrap up the day along with the signal of their leader.
They go back to their nests after a group dance.