Minecraft wiki entry for Egg_farming, associated text: Another option is to collect eggs and throw the eggs into your closed pen. There is only a 1 in 8 chance of spawning a chicken when you throw an Egg, so you should try to collect at least one stack. They will take some time to grow to adulthood but once you have at least one adult chicken it will start producing eggs and with two or more adults you can breed them with any seeds. Each adult chicken will lay an average of 8 eggs per hour.