A chicken is a type of domesticated fowl bird, a subspecies of the jungle redfowl. It is bred for either direct consumption or otherwise for their eggs as a food source.
- Main article: Zanzibar Land Disturbance
The Zanzibar Land forces had chicken as part of the menu for their B3 ration units.
During the events of the Guns of the Patriots Incident, Sunny, Otacon, and Snake utilized three chickens for their eggs, each of whom were named after the three clones of the Les Enfants Terribles project (Solid, Liquid and Solidus). Just prior to the mission to assassinate Liquid Ocelot in the Middle East, Sunny, while proceeding to cook the eggs, noted that only two eggs were used, and that Solidus "must have taken a day off."