I was thinking about getting some chickens... Anyways, I believe you just let em run around, and they will go back to their roost at night. Also, you'll have an unbelievable lawn. [so they say] So your friend keeps them in a cage? They, may not know what to do... hmm... wow, I guess just let em run around. If there is no busy road nearby. They should remember where the water and food is.