whistling duck

noun

any of several long-legged, chiefly tropical ducks of the genus Dendrocygna, most of which have whistling cries.

Origin of whistling duck

First recorded in 1690–1700

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

We would point to Great Kiskadees and White-Collared Seedeaters and maybe a Black-Bellied whistling duck.
My Night on the Border | Bryan Curtis | May 25, 2010 | THE DAILY BEAST
But the whistling duck was a crested one, sir, and you will understand that I deliberated no longer.
The Magic Skin | Honore de Balzac
I have hesitated a long while between the whistling duck, the duck with white eyebrows, and the shoveler duck (anas clypeata).
The Magic Skin | Honore de Balzac
It is very common on most of the Australian creeks and streams, and is called the whistling duck.
Expedition into Central Australia | Charles Sturt
The whistling duck of the Adelaide River, was also only seen on this part of the Victoria.
Discoveries in Australia, Volume 2 | John Lort Stokes

The Governor had promised, so it was alleged, that the slayer of whistling duck should be punished.
Toronto of Old | Henry Scadding

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