Cassowary Sound What Sound does A Cassowary Make?

The cassowary produces the lowest sounding bird call in the world. It can reach a frequency as low as 32 hertz, which is just above the hearing range of humans. It makes these sounds in its chest and neck by resonating air and then amplifying the sound further with its casque. Cassowaries communicate with each other using these low-frequency vocalisations, which can travel up to 5km. Besides these booming sounds, Cassowaries also whistle, hiss, clap their bills and rumble.

What is a Cassowary?