Fulvous Whistling-Duck

Dendrocygna bicolor




Ducks, Geese and Swans (Anatidae)

Code 4


Code 6



Egg Color:


Number of Eggs:

12 - 14

Incubation Days:

24 - 26

Egg Incubator:

Both sexes

Nest Location:

On ground.

Nest Material:

Grass lined with down.





Fulvous Whistling-Duck: Large, long-legged, long-necked duck with dark brown back and white V-shaped rump patch. Head and underparts are buff to cinnamon with white throat and vent. White-edged side and flank feathers form a striking border between sides and back. Tail is black with white undertail coverts. Bill, legs, and feet are blue-gray. Sexes are similar. Juvenile resembles adult but is duller overall. Occasionally perches in trees.

Range and Habitat

Fulvous Whistling-Duck: Resident species along the Pacific Coast of Mexico, the Gulf Coast from Texas to Mexico, Florida, and the West Indies. Also breeds in Texas and Louisiana. Population is declining in the west. Preferred habitats include shallow freshwater marshes, lakes, and flooded agricultural fields.

Breeding and Nesting

Fulvous Whistling-Duck: Twelve to fourteen white eggs are laid in a shallow cup of grass lined with down. Nest is built on the ground in dense vegetation or floats on the water. Incubation ranges from 24 to 26 days and is carried out by both parents.

Foraging and Feeding

Fulvous Whistling-Duck: Feeds almost exclusively on aquatic vegetation, rice, and seeds of marsh plants; forages day and night.


Fulvous Whistling-Duck: Utters a two-note squealing whistle, "k-weeoo" in flight and when feeding, and a harsh "kee" during disputes.

Similar Species

Fulvous Whistling-Duck: Black-bellied Whistling Duck has dark rump, red bill, white wing patches, and lack white flank stripes.


Belly, undertail coverts, chest, flanks, and foreneck.

Undertail covertsX
Small feathers that cover the areas where the retrices (tail feathers) attach to the rump.
The lateral area posterior to the side of the bird’s body that extends back to the base of the tail.
The area between the uppertail coverts and the back of the bird.
Birds do not have two separate cavities for excrement and reproduction like humans do. In birds, there is one single entrance/exit that suits both functions called the vent, cloaca or anus.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X