Lesser Whistling-Duck vs Gadwall

The Lesser Whistling-Duck and Gadwall are both waterfowl but differ significantly in structure and plumage. The Lesser Whistling-Duck has a more slender body and longer neck, while the Gadwall is more compact with a distinctive white wing patch visible in flight.

Look for the white wing patch in Gadwalls, especially in flight. Note the slender body and longer neck of the Lesser Whistling-Duck compared to the more compact Gadwall.

The Lesser Whistling-Duck is generally smaller and more slender than the bulkier Gadwall.

Lesser Whistling-Ducks have a uniform brown body with a paler face and a dark crown, whereas Gadwalls are more mottled with a gray-brown body and a characteristic white wing patch.