I've got an Australorp hen just coming into laying age (6 to 7 months old). She shares a small coop only at night with a rooster and three other medium-sized hens, and free-ranges during the day in the backyard. I don't feed them anything except a significant amount of household scraps every day, and they pick at the compost bin as well. She has not yet laid her first egg, and the other three have not laid since I introduced them a week ago (They have already begun laying - about 1 year old). Five nights ago I began putting additional light in their coop. There is only room in the coop for three roosting bars, a very small floor, and three laying boxes. I close them in the coop and they sit on the roosting bars for the 4 hours the light is on, looking like they wish they could go to sleep. I'm not sure whether I'm capturing the essence of the idea of using extra light. Is this only for large coops with a large social area? Might I be better off putting a flood light in the yard for 4 hours and not shutting them into the coop? Just wondering. One of the other hens is a red sex-link, and she has investigated the laying boxes, but not yet used them. The other two are Wyandottes. Any advice?