How does the Wood Duck's communication differ from that of a typical duck that 'true quacks'?

Answer

The female emits a high-pitched squeal and the drake produces a finch-like whistle.

The vocalizations of *Aix sponsa* are distinct and contribute to their classification as specialists, setting them apart from many common waterfowl species known for standard quacking calls. Specifically, the female Wood Duck does not produce the typical duck call; instead, she is noted for emitting a high-pitched squeal. Complementing this, the male, or drake, communicates using a characteristic finch-like whistle. These specialized sounds are part of the unique biological signature of the species, reflecting adaptations tied to their complex social behaviors near dense wooded areas, rather than the open marsh calls typical of true quackers.

How does the Wood Duck's communication differ from that of a typical duck that 'true quacks'?
birdclassificationscienceFowlwood duck