<P> A whirligig is an object that spins or whirls, or has at least one part that spins or whirls . Whirligigs are also known as pinwheels, buzzers, comic weathervanes, gee - haws, spinners, whirlygigs, whirlijigs, whirlyjigs, whirlybirds, or plain whirly . Whirligigs are most commonly powered by the wind but can be hand, friction, or motor powered . They can be used as a kinetic garden ornament . They can be designed to transmit sound and vibration into the ground to repel burrowing rodents in yards, gardens, and backyards . </P> <P> Whirligigs can be divided into four categories: button, friction, string and wind - driven . </P>

What is the purpose of a whirlygig in nature
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