The compact fluorescent light you showed as a heat source actually puts out lots of light, but almost no heat. It is an efficient bulb, because most the energy used goes toward light. You'd definitely need a differnt kind of bulb, if you want to give your birds some heat!
No need for heat la.p, they are dangerous. Have known many coops to burn down from them. Good deep beddi lng, no wind in coop but keep ventilation. Put some hay bricks inside the coop for them to peck on and scratch
