Nothing much is 'natural' about the way most folks keep chickens anyway. SMH.
Ditto Dat^^^I use lights every year. They get up & eat when the lights go on, but I have always kept the food & water in the coop for that purpose. I would never want them out in the run until the sun comes up.
I've read this too, haven't seen it as I light in the AM....but even tho they are on the roost, or even sleeping, the light is still absorbed by the pineal gland.Funny enough, even though we have lights, they will still go into the hen house depending on natural daylight hours and sit there and wait for the lights to go off.