Whistling Bird | English
Channel: Arvind Gupta
Date: 27/01/2016

Here you can see children making bird sounds with the Whistling Bird. They are of 3 kinds - one made of clay, the other of ceramic and the third made of plastic. If you blow through the stem of the EMPTY bird, no sound will come out. Then fill the bird's tummy half with water and on blowing now the bird will whistle. How does the bird whistle? All sounds from a guitar or a car are sound waves which travel through and reach our ears through vibrations. The bird whistle is no different. It works through vibrations in the air inside the bird. As you blow through the bird's tail the air is split by a narrow blade. This creates a turbulent vortex and causes the air to vibrate. The bird’s tummy which is the resident chamber makes the sound louder. You can alter the pitch of the sound by lowering / raising the bird. 

This work is supported by IUCAA (www.iucaa.in) and TATA Trust (www.tata.com/aboutus/sub_index/Tata-trusts)

Credits:,Ashok Rupner, Manish Jain, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org