Chickens

Chickens appear in Call of Duty: World at War and Call of Duty: Modern Warfare 2 in the campaign level "The Hornet's Nest", and the "Bomb Squad" Special Ops level in the same map. In multiplayer, they are featured on the maps Strike, Rundown, Karachi and Underpass. They appear in very small cages, flapping their wings and clucking. If shot, they will let out a squawk, spin round, and die in a flurry of feathers and blood.

The chickens are there mainly in the game for cosmetic purposes and do not count for any momentum for killing one:


 * In Call of Duty 4: Modern Warfare, they appear briefly in the level "The Coup" when Al-Fulani is dragged into the car.
 * In Call of Duty: World at War, the only chicken to appear is a dead one in the butchers shop in "Upheaval". If shot, it will fall from the wall.
 * In Modern Warfare 2, chickens appear in the level The Hornet's Nest and the Special Ops level Bomb Squad in cages at the marketplace.
 * In Call of Duty: Black Ops, they are seen running away from gunfire before the player reaches the Rat Tunnel. Chickens also appear as a Power-Up in the Zombies level Dead Ops Arcade. They also appear in the DLC map Kowloon and cannot be killed in it.
 * In Call of Duty: Modern Warfare 3, chickens were first seen in the multiplayer trailer. During one of the Create-a-Class scenes, a chicken is seen with the text "CHICKEN" underneath. Several chickens are seen near the well in the multiplayer map Seatown, and in cages in the multiplayer map Bootleg.

Achievement/Trophy
Colonel Sanderson (10 / Bronze Trophy ) - kill seven chickens in under ten seconds in "The Hornet's Nest".

Trivia

 * The "Colonel Sanderson" achievement is a direct reference to the KFC line of restaurant's owner, who was called Colonel Sanders, as well as to Roach's last name being Sanderson.
 * It is possible to earn three titles for the player's callsign with chickens running away from bullets.
 * In the Wii version of Call of Duty: Modern Warfare 3, the chickens are only kill-able with explosives
 * In Call of Duty 4: Modern Warfare, chickens directly appear only in one level of the campaign.
 * When given the opportunity to Prestige; if the player opts out and decides not to prestige, the sound of a chicken squaking is used to most likely provoke one to change their mind.
 * Chickens in the Modern Warfare 3 map Seatown will not explode normally when stuck with semtex grenades, but will instead emit several feathers, spin around, and then die.