Minecraft wiki entry for Egg_farming, associated text: This farm is begun by digging a hole 3 deep, by 4 long, by one wide hole. The chests and hoppers are placed on the bottom (a double chest on one side, two hoppers feeding into it on the other). The ladder can go over the chests. Two blocks then go over the hopper next to the chest, to keep the chickens in place. Then you can hatch chickens over the exposed hopper, and eventually collect eggs from the chest.