Actually, I don't have a report for last night. (Unless you want to hear about Neil and Cecilia's bed-time routine.) But I went outside this morning and quickly found evidence that everything is continuing as hoped:
I never thought a pile of bat guano could make me smile, but it did this morning.
Here's a picture of the bat box hanging directly above the droppings pictured above:
I have no idea how many bats are now using the east facing box, but the numbers are clearly going up each night. Despite this, the bats in our bat boxes are still only a small portion of the colony evicted from our attic. Wherever the rest are I hope they too have found sufficient shelter.