A battery cage is a type of cage for hens in intensive chicken farming. These cages are usually stacked in rows that enable a huge quantity of chickens to be kept in a small area. Battery cages are planned to have the chickens kept in a specific environment which has automatic feeders and drinkers. However, there is always a controversy regarding the use of battery cages because of the welfare of chickens. Some people believe that battery cages are too small and therefore do not allow the chickens to behave naturally. Consequently, there has been an increasing movement toward more compassionate housing methods of chickens