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Name: Katie
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Which birds use gizzard stones?

The stomach of birds is divided into two pouches, unlike ours which have only one. The gizzard is the second pouch. In birds that eat soft foods the gizzard isn't much different from the first portion of the stomach. Birds that eat seeds and other harder food, which includes many families and species, have variously developed muscular, grinding gizzards. See Leahy, The Birdwatcher's Companion or other references for more detail.

J. Elliott

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