Corner a chicken in town and keep slashing it with the sword. After awhile a group of chickens will attack you. Note: If this is done twice, you will die and have to start from a saved game.

Find any chicken (even dead ones in the Dark World) outside of a house. Corner it, then use any available item to attack it. Keep hitting it until you are suddenly attacked by flying deadly chickens. The amount of time you need to wait depends on the item you use. The more powerful, the less the wait. To flee from the attack, leave the area into a new screen, or pick up the chicken.