We live in Central Florida, and my older hens stopped laying about a month ago. I figured it was due to the change in the amount of daylight. Now all of a sudden, my younger hens have started laying. Kinda confused now. No one lost any feathers, so i don't think they stopped to molt. I don't keep them under artificial light during the winter to give them a break. The only light they might be getting is from a purple bug light I keep in my grow out coop. We have a HORRIBLE problem with mosquitoes where we live. My hen house and grow out coop share an interior wall and it has a small vent in it to allow air circulation between the 2 coops. I don't think the bug light is what caused them to start laying again, because it runs all night and has throughout the summer. Any ideas?