About Dendrocygna arcuata (Horsfield, 1824)
Formerly called tree ducks, the wandering whistling duck got its current common name from its loud whistling calls and the whistling sound its wings produce during flight. This species has long necks and long legs, with an appearance that is intermediate between geese and ducks. They have strong heads and necks, with darker coloration on the crown and hindneck. Their breasts bear black spotting, and most of their body feathers are dark brown. Adults stand 54 to 60 centimeters tall, and have an average weight of 750 grams. Their diet consists mainly of grasses, waterlilies, and other water plants; they will occasionally also eat insects and aquatic vertebrates. The wandering whistling duck inhabits deep lagoons, flooded grasslands, and dams. They favor being in water and rarely leave the shoreline, and are able to swim and dive with great ease.