Black-Bellied Whistling-Duck

The subject is identified as a Black-bellied Whistling-Duck based on several key morphological features visible across both images. These include its long, pale legs, upright posture, and goose-like profile. Critically, the second image clearly shows a bright pinkish-red bill and a prominent white patch on the upper wing, which are diagnostic for this species and rule out the similar Fulvous Whistling-Duck. The behavior of perching on a wall is also characteristic of this species.