The chicken is a type of domesticated fowl, a subspecies of the red junglefowl. It is one of the most common and widespread domestic animals, with a total population of more than 19 billion as of 2011. Humans commonly keep chickens as a source of food (consuming both their meat and eggs) and as pets.[from wikipedia]

Chickens found on the farm or raised for food.The domesticated chicken is largely a food source.

The male of the chicken.The more aggressive of the gender and isrequired to fertilize eggs.

Chickens found in zoos.Some chickens are wild, while others are displayed for childrenin petting zoos.