Gapeworms are common in young, domesticated chickens and turkeys.

Menopon gallinae- Louse commonly found on domesticated chickens and guinea fowl.

More specifically: the interbreeding of domesticated chickens from different countries and the expected creation of a cosmopolitan hybrid.

Jungle fowl are believed to be the ancestors of the modern domesticated chicken.

The Yangshao people domesticated chickens, ducks, pigs, dogs and cattle.

(500 BC) - Source for introduction of the domesticated chicken into Europe.

Because domesticated chickens are sedentary, the presence of the antibodies always indicated infected mosquitoes were nearby.

The commonest bird in the world is the domesticated chicken.

(For the uninitiated, the red jungle fowl is the wild ancestor of modern domesticated chickens.)