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Birds, like all vertebrates, consist of a number of systems that each operate independently or with each other to provide for the normal activity and functioning of the animal as a whole.

 

The major body systems are:

Integumentary (surface of the bird)

Skeletal System

Embryology of the chicken

Circulatory system

Digestive system

Endocrine system

Excretory system

Immune system

Metabolic system

Muscular system

Nervous systems & important sensory organs

Respiratory system & thermoregulation

Reproductive system

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