Instructions for use
Place the whistle on your tongue so that the jagged part is facing backwards and the side with the membrane is on the underside. Let the whistle rest on your tongue until it is soft. Then gently lift it with your tongue to the roof of your mouth behind your teeth. Say "sch, sch, tsch, tsch, tschrr, tschiro, tzschat, tschrü"... With a little practice, you'll be able to imitate any bird song or any other musical note. Try other animal sounds too. For example, a duck: wieht, wieht... or a pig: oi, oi rowoit, etc.
Good whistle, good sound!