Fulvous Whistling-Duck vs Lesser Whistling-Duck

In short

The Fulvous Whistling-Duck and Lesser Whistling-Duck are similar in appearance but can be distinguished by their plumage and vocalizations. The Fulvous Whistling-Duck is generally more uniform in color, while the Lesser Whistling-Duck has distinctive markings. Both species share similar habitats but differ slightly in their vocal calls.

Identification tips

• Plumage: Look for the uniform tawny color of the Fulvous Whistling-Duck versus the contrasting dark crown and pale face of the Lesser Whistling-Duck.
• Vocalization: Listen for the raspy call of the Fulvous Whistling-Duck compared to the softer call of the Lesser Whistling-Duck.
• Habitat: Note the association of Fulvous Whistling-Ducks with rice fields, especially in the Gulf Coast region.

Size

Both species are similar in size, with no significant difference that aids in field identification.

Plumage

The Fulvous Whistling-Duck has a more uniform fulvous (tawny) body with a darker back and wings. In contrast, the Lesser Whistling-Duck features a more contrasting plumage with a darker crown and nape, and a distinct pale face and throat.

Behaviour

Both species exhibit similar behavior, often seen in flocks and feeding in wetlands. There are no significant behavioral differences noted for field identification.

Habitat

Both species are found in wetland habitats, including rice fields and shallow lakes. The Fulvous Whistling-Duck is more associated with rice cultivation areas, especially in the Gulf Coast and parts of Cuba.

Voice

The Fulvous Whistling-Duck has a raspy, two-noted call, often heard at night. The Lesser Whistling-Duck's call is softer and more melodious, which can help differentiate them in the field.