Question

In what way does the gizzard compensate for the lack of teeth in birds?

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When a bird intakes food, it passes from the mouth cavity straight to the esophagus. From the esophagus, the food goes into the crop, which is an enlarged part of an esophagus that is used for storing and moistening the food.

Food then passes to the two-part stomach. In the first chamber, the so-called proventriculus, the breaking of the food happens with the help of acid and different digestive enzymes.

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