Piggy Bunnies are the pigs wearing costume bunny ears on their heads and are only found in the Easter Eggs world. You may destroy more than 300 before finishing the world, but can finish up on Level 1-4. There are 7 bunnies mixed in the cluster of wood planks in the level. Just rapidly fire all 4 of your birds into reasonable locations. You should easily be able to get 5 of the bunnies, if not more with all your shots. As soon as your last shot settle and you are not going to get any more of the bunnies, pause and restart the level.