Rick&chickTampa
Songster
That makes sense, but I wonder if the chickens day/night cycles will be messed with by it getting dark outside, they wander inside to go to bed and suddenly it's light again... I know with photo period sensitive plants that you can seriously set yourself back if you so much as point a flashlight in their direction at night. A greenhouse I used to work for grew poinsettias and they had to cardboard up the greenhouse windows while they were in there to keep headlights from being able to shine in at night because any time that happens, you are set back 1 night on the color change.
I know chickens aren't poinsettias, but, I would assume that photo period sensitivity is similar across most lifeforms.
We had the same problems when I worked in a greenhouse as a kid. The city installed a new street light. We covered the poinsettias every evening with black shade cloth