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The avian immune system is the system of biological structures and cellular processes that protects birds from disease. The avian immune system resembles that of mammals since both evolved from a common reptilian ancestor and have inherited many commonalities. [1] They have also developed a number of different strategies that are unique to birds.
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In birds, the bursa of Fabricius (Latin: bursa cloacalis or bursa Fabricii) is the site of hematopoiesis.It is a specialized organ that, as first demonstrated by Bruce Glick and later by Max Dale Cooper and Robert Good, is necessary for B cell (part of the immune system) development in birds.
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Download as PDF; Printable version; In other projects ... Abnormal behaviour of birds in captivity; Alaska Raptor Center; Avian immune system; Avian veterinarian; B ...
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.
The digestive system of birds is unique, with a crop for storage and a gizzard that contains swallowed stones for grinding food to compensate for the lack of teeth. [148] Some species such as pigeons and some psittacine species do not have a gallbladder. [149] Most birds are highly adapted for rapid digestion to aid with flight. [150]