The Eurasian teal (Mòng két, Anas crecca), common teal, or Eurasian green-winged teal
The bird gives its name to the blue-green colour teal.

The Eurasian teal, common teal, or Eurasian green-winged teal (Mồng két, Anas crecca) is a common and widespread duck which breeds in temperate Eurosiberia and migrates south in winter.

The name Anas is the Latin for "duck".
"Crecca" is a Latinized onomatopoeia, from the Latin crecca or Greek krex, meaning "to cry" or "to creak," referring to the sound the Green-winged Teal makes. kricka, the Swedish name for this bird species.