Black-bellied WHistling-Duck
Sight
Long-necked duck
“Gooselike” appearance
Long, Pinkish legs
Bill typically pinkish to reddish
Brownish-gray head/face
White eye-ring
Narrow dark stripe from crown to hindneck
Conspicuous white patch on the wing, very visible in flight
Brownish Cinnamon breast, lower neck, and back.
Lower belly black and spotted with white
The underside of the wing is black
Legs extending beyond tail in flight
Wingbeats slow
Flies in lines
Immature birds overall tan on the face, neck, and breast
Immatures have black on flanks
Immature has a pale, blue bill
Immature has a generally grayish appearance.
Immatures have purple-gray feet and legs.
Ducklings have unique black patterns against yellow body
Ducklings have gray bills and legs
Fulgens subspecies
Adults are fairly easy to distinguish from other ducks. Juvenile birds are fairly similar generally to Fulvous, check immature notes.
Different Xeno Canto links(by order as provided in bullets)
pe-che-che-ne: https://xeno-canto.org/102174
yip: https://xeno-canto.org/574046
Fulvous hybrid
*Very variable
Partial or thin white eye-ring
Bill is partly Blue/black and Pink, typically pink at the base
Underside typically chestnut whether as black
The face is a perfect tan color, almost like a West Indian Whistling Duck.
Sound
High pitched, soft whistle pe-che-che-ne. The pe is typically long and drawn out.
Short yip. Singular or in series.
Additional flight call chit-chit-chit or cheet-cheet.
Distraction call oo-eek
Utter twittering sounds while loafing
This shows the Juvenile birds with markings.
This shows all head features very well. Pinkish red bill with dark stripe and eye ring.
This shows the inflight features well. White patch in wing and legs past tail.
This is the bet photo to show all basic id features.
This shows the black and white spots on undertail.
Shows what a flock of birds looks like in flight.
Hybrid Black-bellied x Fulvous Whistling-Duck. Notice the thin eye-ring and pinkish base of the bill. Body resembling a Fulvous more than a Black-bellied.
Gallery
This shows the immature field marks like the gray bill, gray/purplish feet and overall tan coloring.
Another look at juvenile ID features. Note bill, tan-brown coloration and gray legs.