How do you use a shepherds' whistle?

To use a shepherd's whistle, hold it between your lips, ensuring that the sound hole is positioned correctly. Blow gently but firmly to produce a clear tone, adjusting your mouth shape and the airflow to control pitch and volume. Practice varying your breath pressure to create different whistles and commands, which can be used to communicate with sheep or other animals effectively. Consistent practice will help you master the subtle nuances of the whistle for better herding.