The progress of the swarm that's now living in a horizontal hollow log. After six weeks they have started their seventh comb.
The frame laying on its side on the bottom was a full deep frame of capped honey that I gave them to give them resources to get a good start on building their own comb. Before I could remove it they had built their first comb down and attached it to the frame. So the frame is now a "permanent artifact" inside their hive.