The Baikal Teal (Anas formosa) is a dabbling duck measuring on average 39 and 43 cm. It is slightly larger and longer-tailed than the Common Teal.
Breeding habitat includes the forest zones of eastern Siberia from the Yenisey basin eastwards to Kamchatka. It is a migratory species, wintering in Japan, Korea and northern and eastern China.
The breeding male is unmistakable, with a striking green, yellow and black head-pattern and a white vertical line at the side of the breast.
Females also have a distinctive head pattern with a small but prominent circular white loral spot, and a dark stripe behind the eye. Juveniles resemble the female and can be distinguished from the Common Teal by the pale loral spot.
In non-breeding plumage, the drake looks more like the female, but plumage is a much richer rufous color.
It breeds in pools on the tundra edge and within swampy forests. In winter it is found on lowland freshwaters.
This species is classified as Vulnerable due to hunting and destruction of its wintering wetland habitats.