The Green-winged Teal may be conspecific with the Common Teal and the issue is still be considered. Green-winged Teals are found in North America. Common Teals are found in Asia, Europe, and Africa,

Green-winged Teals are the most common Teal in North America and the Bay Area. The males are easily recognizable by their cinnamon head with the green patch above the eye. It is the smallest of the Teals and is also a dabbling duck.