Life in a superinsulated solar house. More about the life than about the solar.
Oh I hope they do move in! I love the little things!
They might move in yet, don't lose hope ;)
I did catch a glimpse of one on the tree yesterday, but low down and around the other side. Since the far side of the tree is at the top of the bluff I have never had a good look at it; perhaps there are suitable holes there. (Come to think of it, do nuthatches nest in holes? I seem to think they do.)