crop

…the stomach forms a thin-walled crop, which is the bird’s principal organ for the temporary storage of food. Some birds use the crop to carry food to their young. Ruminant mammals, such as the cow, are often said to have four “stomachs.” Actually, the first three of these chambers (rumen,…

…be enlarged to form a crop. The crop discharges into the midgut, sometimes, as in cockroaches, by way of a muscular gizzard or proventriculus. The termination of the midgut is marked by the attachment of the malpighian tubules, the chief organs of excretion. The hindgut commonly consists of a narrow…