The original Audubon™ Bird Call, available in classic red or natural birch finish, packed in attractive gift box. Sturdy cast zinc and solid birch construction. Rosin capsule included to maintain the call’s distinctive chirp. Sound is produced by rotating the wooden cylinder against the cast zinc plug. By varying the pressure between the two surfaces while twisting back and forth, a variety of bird sounds can be accurately imitated. Recognized by multiple generations of birders and outdoors people, the Audubon Bird Call has been made and tuned by hand in the USA in the same way for over 60 years.