The Cobb eyases are 15 days old. And very well fed. Look at the big crops, full of food. In the front part of the neck the crop (or ingluvies) is found. It is actually an outpouching of the esophagus, the tube that carries food from the mouth to the stomach. Many people think that all birds have a crop, but some do not, including the gull and penguin. The crop, in eyases, is very large, and shrinks down as the eyas grws older.
The crop should always be well filled. The eyases need a constant supply of nutrients, so the parents feed the little ones several times a day.
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