The Eurasian teal or common teal (Anas crecca) is a common and widespread duck which breeds in temperate Eurasia and migrates south in winter. It is a highly gregarious duck outside the breeding season and can form large flocks. It is commonly found in sheltered wetlands and feeds on seeds and aquatic invertebrates.

These teals arrived in South Korea more than two weeks earlier.
The big one is a spot-billed duck.