House Sparrow (whistle)

Place the instrument in one hand and clap it discretely with the other hand several times. Try imitating a single sparrow’s individual rhythm. An incredibly easy instrument with a perfect sound.
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.