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==Introduction==
==Introduction==
The crop is a food storage device present in avian species. It is usually used when the muscular stomach (gizzard) is full.
The crop is a food storage device present in avian species. It is usually used when the muscular stomach (gizzard) is full. The crop also softens food.
It is useful tool for avian veterinarians and owners of assessing when the bird last ate and it is especially important to ensure young chicks always have full crops. It is also a common site for impactions and surgical entry to remove foreign bodies.
It is useful tool for avian veterinarians and owners of assessing when the bird last ate and it is especially important to ensure young chicks always have full crops. It is also a common site for impactions and surgical entry to remove foreign bodies.
*Muscular chamber
*Muscular chamber
*Fusiform enlargement of the [[Oesophagus - Anatomy & Physiology|oesophagus]]
*Thoracic inlet of ventral wall of [[Oesophagus - Anatomy & Physiology|oesophagus]]
*Bulges and lies against the breast muscles
==Species Differences==
==Species Differences==
*No crop in
*Crop small in ducks and geese
*Crop much larger and muscular in seed eating birds
*Crop milk produced by pigeons for their squabs
*Crop milk produced by pigeons for their squabs