From Guild Wars 2 Wiki
Chickens are small ambient creatures that can be found near farmland throughout Tyria. Killing them counts towards the Indiscriminate Slayer achievement. Chickens can also be found as friendly NPCs rather than critters.
- Diessa Plateau
- Help Rak Deathmane maintain Stonefall Estate (21)
- Get back at the pirates for Joukje (31)
- Protect Seraph's Landing (39)
- Help the peaceful ogres of Degun Shun (46)
- Stolen skills
- In the Stronghold of Ebonhawke, repeatedly attacking the invulnerable chickens in the farm in the southwestern part of the city will cause hostile, invulnerable "Angry Chickens" to spawn. This is a reference to the Legend of Zelda Series, where if you repeatedly attack a Cuccoo, many Cuccoos will spawn and attack you.
- Killing all of the chickens in the Urban Battleground Fractal will grant your party the Out of Cluck achievement.