Lights out

[TSturgis]

My ladies r 9 weeks old & fully feathered... How long do i
continue to leave their lamp on( im now using a 43 watt bulb) during the night?? I live in michigan & winter is on its way... suggestions?

 

[Kiki]

I would have turned the lights out weeks ago.

 

[lazy gardener]

5 weeks ago.