The Black-bellied Whistling-duck (Dendrocygna autumnalis) is found from south Texas and northwest Mexico to west Ecuador and north Argentina. Its place is in open freshwater marshes and ponds, wet pastures, and shallow lagoons. Adults are 53 cm (21 inches) in height and 800 g in weight.
Its head is mostly brownish, and its throat and eye-ring are white. Crown and hindneck are dark brown, and body mostly chestnut. Belly, underwing, and tail black. Bill red and legs pink. This bird eats seeds, leaves and shoots, mollusks, and insects.