Jay (whistle)

Hold the instrument in the palm of your hand, and blow “Casch” sounds repeatedly, opening your hand. The powerful sounds may even scare the starlings away from your cherry tree!
See video below. 
Delivered in handmade wooden box.

Video: French Francois Morel shows here how the bird sound is produced. Francois Morel is an ornithologist and has been producing bird calls since 1975. Read more about the production of bird whistles.