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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] The primary function of the proventriculus is to secrete ...
Bird anatomy, or the physiological structure of birds' bodies, shows many unique adaptations, mostly aiding flight. ... The proventriculus is a rod shaped tube, ...
Gizzard. 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. This specialized stomach constructed of thick ...
The latter can disable even large predatory birds with their obnoxious stomach oil, which they can project some distance. This stomach oil, stored in the proventriculus, is a digestive residue created in the foregut of all tubenoses except the diving petrels, and is used mainly for storage of energy-rich food during their long flights. [44]
The crop (also the croup, the craw, the ingluvies, and the sublingual pouch) is a thin-walled, expanded portion of the alimentary tract, which is used for the storage of food before digestion. The crop is an anatomical structure in vertebrate animals, such as birds, and invertebrate animals, such as gastropods (snails and slugs), earthworms, [1 ...
A ratite (/ ˈrætaɪt /) is any of a group of mostly flightless birds within the infraclass Palaeognathae. [3] They are mostly large, long-necked, and long-legged, the exception being the kiwi, which is also the only nocturnal extant ratite. The understanding of relationships within the paleognath clade has been in flux.
The anatomy of bird legs and feet is diverse, encompassing many accommodations to perform a wide variety of functions. [1] Most birds are classified as digitigrade animals, meaning they walk on their toes rather than the entire foot. [3][4] Some of the lower bones of the foot (the distals and most of the metatarsal) are fused to form the ...
16 genera, 99 species, of which 3 are extinct. The family Procellariidae is a group of seabirds that comprises the fulmarine petrels, the gadfly petrels, the diving petrels, the prions, and the shearwaters. This family is part of the bird order Procellariiformes (or tubenoses), which also includes the albatrosses and the storm petrels.