Black-bellied Whistling-Duck Identification, All About Birds, Cornell Lab of Ornithology

Fulvous whistling duck or fulvous tree duck (Dendrocygna bicolor) is a species of whistling duck that breeds across the world's tropical regions in much of America.

Lesser Whistling Duck or Dendrocygna javanica, also known as Indian whistling duck or lesser whistling teal, is a species of whistling duck that breeds in the Indian subcontinent and Southeast Asia.

Black-bellied Whistling-Duck, Dendrocygna autumnalis, animal in the nature habitat, Costa Rica. Duck sitting on the branch.