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  2. Proventriculus - Wikipedia

    en.wikipedia.org/wiki/Proventriculus

    The proventriculus is a standard part of avian anatomy, and is a rod shaped organ, located between the esophagus and the gizzard of most birds. [2] It is generally a glandular part of the stomach that may store and/or commence digestion of food before it progresses to the gizzard. [3]

  3. Gizzard - Wikipedia

    en.wikipedia.org/wiki/Gizzard

    Gizzard of a chicken. The gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals, including archosaurs (birds and other dinosaurs, crocodiles, alligators, pterosaurs), earthworms, some gastropods, some fish, and some crustaceans.

  4. Monogastric - Wikipedia

    en.wikipedia.org/wiki/Monogastric

    These are subdivided into two groups based on the relative size of various digestive organs in relationship to the rest of the system: colonic fermenters tend to be larger species such as horses and rhinos, and cecal fermenters are smaller animals such as rabbits and rodents. [4]

  5. Crop (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Crop_(anatomy)

    In a bird's digestive system, the crop is an expanded, muscular pouch near the gullet or throat. It is a part of the digestive tract, essentially an enlarged part of the esophagus. As with most other organisms that have a crop, it is used to temporarily store food. Not all bird species have one.

  6. Bird anatomy - Wikipedia

    en.wikipedia.org/wiki/Bird_anatomy

    Bird anatomy, or the physiological structure of birds' bodies, shows many unique adaptations, mostly aiding flight.Birds have a light skeletal system and light but powerful musculature which, along with circulatory and respiratory systems capable of very high metabolic rates and oxygen supply, permit the bird to fly.

  7. Bird - Wikipedia

    en.wikipedia.org/wiki/Bird

    The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. The study of birds is called ornithology. Birds are feathered theropod dinosaurs and constitute the only known living dinosaurs.

  8. Gastrolith - Wikipedia

    en.wikipedia.org/wiki/Gastrolith

    Domestic fowl require access to grit. Stones swallowed by ostriches can exceed a length of 10 centimetres (3.9 in) [citation needed]. Apparent microgastroliths have also been found in frog tadpoles. [2] Ingestion of silt and gravel by tadpoles of various anuran (frog) species has been observed to improve buoyancy control. [1]

  9. Poultry - Wikipedia

    en.wikipedia.org/wiki/Poultry

    "Poultry" can be defined as domestic fowls, including chickens, turkeys, geese and ducks, raised for the production of meat or eggs and the word is also used for the flesh of these birds used as food. [7] The Encyclopædia Britannica lists the same bird groups but also includes guinea fowl and squabs (young pigeons). [13]