I heard her coming as I stepped outside of the front door.
The pot had already been covered and she spent the next two days adding layers of mud to weather proof her nest for the winter.
I was fascinated to see her bring the smooth mud ball, held against her thorax by her front legs and her head.
The mud ball was then smoothed into place, perhaps to resemble the stone wall surface?
This is the type of pot she is covering, so she is capable of a much finer work. I had watched a pot being built last October. Perhaps it was from that very pot that she has emerged this year.