Audubon Bird Call. This remarkable birchwood and metal instrument when twisted, will make a variety of sounds which attract wild birds. It is individually tuned, and is now the standard songbird call throughout the world. Keep the call dry, and with reasonable care the birdcall will last forever. The capsule contains powdered rosin. A small amount of powdered rosin, used occasionally, will renew the Audubon Birdcall's voice. Ages 8+. Made in USA.