Organ of voice in birds is called as:

Explanation

The syrinx is the voice box of birds. It is a specialized vocal organ located at the base of a bird's trachea where the trachea splits into the bronchi (the two main branches leading to the lungs). The syrinx is unique to birds and is responsible for producing the sounds and songs that we associate with different bird species. It allows birds to produce a wide variety of complex vocalizations, which they use for communication, attracting mates, establishing territory, and more.