In places like Texas and Louisiana, watch for noisy flocks of these gaudy ducks dropping into fields to forage on seeds, or loafing on golf course ponds. Black-bellied Whistling Duck Nest Box. Whistling ducks were formerly known as tree ducks, but not all like trees. What to do? They are much less arboreal than the perching ducks for instance. Get Link. Larry Korhank. The southernmost extent of this bird's range stretches through Brazil and into northern Argentina, though they are absent from western South America where mountainous regions are unsuitable. . Listen for them, too—these ducks really do have a whistle for their call. I awoke on a beautiful June morning in Sugar Land, Texas to find these darling babies in my pool. Larry Korhank. Significant reduction in duckling mortality has been achieved using metal posts and cone guards below the boxes. Mexican whistling duck. Please do not attract duck families and leave them vulnerable to predators. Black-bellied whistling-ducks are found year-round in eastern and southern Texas and along both Mexican coasts into Central America and South America. The Black-bellied Whistling-Duck is a boisterous duck with a brilliant pink bill and an unusual, long-legged silhouette. There are eight species of Whistling Duck (Dendrocygna) including the Black-bellied Whistling Duck, Fulvous Whistling Duck, Lesser Whistling Duck, Plumed Whistling Duck, Spotted Whistling Duck, Wandering Whistling Duck, West Indian Whistling Duck, and the White-faced Whistling Duck. Black-bellied whistling ducks usually raise two broods in a season. The name whistling duck is far more appropriate and descriptive, as all have calls ranging from distinctive high-pitched shrill sounds to clear or squeaky whistles. Mexican whistling duck. Range Whistling ducks live in the […] The black-bellied whistling duck nest box has a 12″ by 12″ floor, 22″ inside floor to ceiling, a very large 6″ wide by 4″ high entrance opening located 19″ above the floor (to the top of the hole) and ventilation openings in the floor …