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1 _______. The work of chewing is done by the gizzard, the part, the part of the bird’s stomach where the food is ground up. 2 _______. After food is swallowed, it passes into a space called a “crop”, in the chicken’s gullet, or throat. 3 _______. Then the food passes into the gizzard. 4 _______.
Chickens, like no other birds, have an unusual way of chewing their food.
Since birds have no teeth, they must swallow their food whole.
There the food is stored and softened.
In the gizzard it is crushed by the grinding action of the tough gizzard lining, often with the aid of gravel and grit that the chicken has swallowed.