My eight chicks have officially outgrown their brooders and their coop is not due to be finished for two more weeks. For temporary housing we have wrapped the bottom of our kids trampoline with hardware cloth and also included an apron to deter digging. We raised a dogloo on blocks and built a ramp. Their light is there for warmth at night, we secured it to a stake and drove it into the ground so it would point into the dogloo. Their freestanding roosts are in the dogloo as well. My only concern is the dogloo lacks a door. How do I build a door that will allow heat in and sufficient ventilation? Is a door even necessary? Also, my chicks range in ages from 3 - 7 weeks.