My wife and I bought 2 EE chicks(auracana?), 2 RI reds, and 2 barred rock chicks, just getting feathers from down. Should they get dark time? How much? We have a ceramic heat source and a seperate light source that can be timed. They seem to really doze off if we turn out the light for 1/2 hour. I should add that they are being raised in a pen in our basement on newspaper with a nesting box in the pen that has timothy hay in & around it. They all pile in the box when the light is off and really sleep harder than when sleeping w/ light on.