OK, I hope someone see's this so I can get some advice,, I've had chickens for a whole 3 days now. They are doing great but didn't lay for the first few days, I bought them from a farmer that had different age groups. I have 1 really cool Rooster that is a Black Cooper Marans , 3 Rhode island Red's, 2 Barred Rock, 2 Black Sex Links,5 Red Sex Links, 1 Araucana. 8 are of laying age and the rest will start in a few weeks. well not the rooster.lol anyway this is my QUESTION: I know finally right,,, I have a 5 x 12 room with a 8 foot tall ceiling, NO WINDOWS because it is in a barn, it is a really great space I have a great door and roosting spots and a row of nest boxes,( you can see those in my avatar) I until today had no lights because I had no access to electric, I fixed that problem and now have a light, One so I can see to gather eggs and two so they have light, I have a screen door for me to walk into the coop area, it has a spring to pull the door closed behind me and a lock so no critters get in,, Not that they will. They have to walk past 6 Rottweilers( Im a Rottweiler Breeder) to get to the area the chickens are as it is an interior room. So finally my Question: What time should I turn on the light for them in the am, Im guessing about 5.00am and turn it off 30 mins or so after the sun goes down. here is why I ask, I see all the other answers but you all have windows I don't... But the pop hole and the screen door along with the ceiling design create a great air draft for ventilation but absolutely no outside light from the days sun. Please help I hope I got to the question without going on and on.. but this I a question I really need an answer for .. Thanks Denny