That could set them off but daylight loosing is the strongest reason have you noticed sllot of feathers in the coop? they first molt may be happening also
yes, three have molted recently, so I was expecting only the other three to keep laying since they are about 8 months old and had started laying daily. maybe I need a brighter light bulb, but last year, all I did was add a few windows and had good laying up until the end of december.