Gadwall vs Chiloe Wigeon

The Gadwall and Chiloe Wigeon can be distinguished by their head patterns and overall coloration. The Gadwall has a more subdued appearance with a grayish body and a white speculum, while the Chiloe Wigeon is more colorful, featuring a striking green head and a white face patch. Both species are dabbling ducks, but their plumage differences are the most reliable field marks.

Look for the white face patch and green head of the Chiloe Wigeon, which contrasts with the grayish body and black rear end of the Gadwall. The white speculum of the Gadwall is also a key feature, especially in flight.

The Gadwall has a grayish body with a black rear end and a white speculum visible in flight. In contrast, the Chiloe Wigeon is more colorful, with a green head, white face patch, and a chestnut breast.