From Worms Knowledge Base
Released like the Sheep, the Chicken hops around the landscape (attempting to fly at the same time, resulting in bigger jumps) and lays a dozen small explosive eggs before exploding into an array of feathers.
Couldn't be too hard to program. It's just the same as a sheep, only with bigger jumps and bombs falling from the chicken as it jumps. Most likely this would be a super weapon, depending on how powerful the explosive eggs are. It is not that different from the Airstrike, except that it requires a little more planning to make sure it gets the target.
The skunk got in, so why not the chicken? Worms has always been notorious for including explosive animals, and the more the merrier. A 'squawking' sound effect would go well with this weapon.