Physiology

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Evolution of the bird

It is generally accepted that birds evolved from reptiles and may therefore be seen as warm-blooded, feathered, flying reptiles. The most commonly held view is that theropod dinosaurs were ancestral to birds,... read more

Introduction to anatomy and physiology

Understanding the anatomy and physiology of birds and the different body systems found in the bird is useful for people seeking an understanding of how poultry work or function. Knowledge of anatomy... read more

Anatomy of the Chicken Learning Resource

Click here to use the Anatomy of a Chicken

List of common anatomical and physiological terms

The study of animal anatomy and physiology involves many terms not commonly used in daily communication. A – C Abdominal cavity: in vertebrates that part of the body cavity containing... read more

Body Systems

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

The avian egg

Humans and other animals have used eggs as a food source for millennia. Eggs are an important and well-balanced source of essential nutrients. Bird eggs (for example, chicken eggs) consist of a protective... read more

Incubation

Fertile Eggs The nucleus of the female cell is a small light or white speck about the size of a pin head, and is located on the top side of... read more