Ever wonder what the gastrointestinal tract of poultry looks like?
The gastrointestinal (GI) tract of avian species is notably different from other species. In general that tract is much shorter and therefore lighter. Kind of an important feature if you are going to fly? Even though birds are considered monogastrics, (meaning they have a simple, one chamber stomach) like pigs and humans, their GI tracts look much different. For one thing, they don't have teeth, so they rely on a specialized organ called a gizzard to help breakdown food particles. They also have a crop, which is basically a pouch off of the esophagus where feed can be stored and moisture is added, prior to entering the proventrriculus (similar to the stomach). The video below details the anatomy and physiology of the avian GI tract.