With a little practice, you will go crazy!
It is reusable.
Make bird sounds and nobody will guess where they are coming from.
Realistic bird songs for a variety of birds.
Just gently hold the on the tip of your tongue and make an SSS sounds with your tongue towards the roof of the mouth.
Specification：
Material: paper+metal+plastic
Length: 1.1 inches
Width: 0.79 inches
Package includes:
5x bird whistle
Instructions