Common Name: Lesser Whisteling-duck
Scientific Name: Dendrocygna javanica
Nepali Name: Silsile ( सिलसिले )
Size: 42 cm 
Location: Bardiya, Nepal

Found in wetlands below 305m, these Lesser Whisteling-duck can be identified by its dark-brown crown, greyish-buff head, and neck, chestnut color patches on the forewing and uppertail-coverts. 

Please feel free to comment below if the above species has been misidentified.