Production is at a hault

[Bonnie&Clyde]

Ok so the last week and half my egg production went from 10 eggs a day to 1 if I'm lucky. I have no idea what has stopped them from producing, they always have water and food, clean coop, and I'm almost certain that there is nothing spooking them. I need help!!!

 

[junebuggena]

How old are they? Do you feed them anything other than feed? Do they ever free range?