That sure looks comfy. Our's won't have a heat lamp when it's time. We don't have electricity near the coop or a chord that extends that far. We'll have to wait a little longer too, since the weather is absolutely schizoid this year. LAst Saturday - 80 degerees, this Saturday - snow!
Two years ago when our two buffies were ready to go, we provided a plastic tote (upturned with a hole cut out for a door) and stuffed it with straw. They snuggled right in with each other each night and did fine. In fact, they lived in that tote for a long time - even after the coop was finished and we moved the tote to the coop - they still stayed inside that tote. We'll have to provide the same set up this time around too. Am a little nervous about our silkie. She may have to be 'held back'.