Before the random event update in 2014, Evil Chicken would immediately start attacking players upon arriving, using a Magic-based attack which is low-hitting but extremely accurate and rapid. This made him very dangerous for players who are low on Hitpoints or unattentive. Players were forced to either fight and kill the chicken or run away from it. If you managed to kill him, he dropped between 32-750 feathers, raw chicken, and bones.
The Evil Chicken could not be attacked by anyone besides the player to whom he appeared. If the player took too long to kill him, or if they were in range but not attackable (such as if they are in a different room), the Evil Chicken would get bored and leave. The chicken could not move from the spot in which he has appeared, so if a player stepped on top of him, instead of moving to the side as other monsters will, he would shout "Get off of me!," and use a special attack which will push the player aside.
The Evil Chicken's combat stats used to vary depending on the player's combat level.
|Player level||Evil Chicken level||Hitpoints||Max hit|
Item Quantity Rarity GE market price Bones 1 Always 66 Raw chicken 1 Always 72 Feather 100–200 Always  300–600 Evil chicken's egg 1 Always  Not sold
- ↑ The quantity of feathers dropped is increased to 150-250 if a Ring of wealth is equipped.
- ↑ https://twitter.com/JagexAsh/status/608017217750319105
- ↑ During the quest Recipe for Disaster