I like Bats. We have some small chestnut colored bats with adorable little faces not much bigger than a quarter when all folded up and with thee young ones, we had visit once.
I believe you may be right on chickadee based n appearance.
They do have neat and tidy nest of small twigs on one of the fans.
Yesterday morning I saw all these yellow and white moths. They looked like fuzzy bears with big eyes flying helter scelter. The two birds and the mths wer manuvering like jet fighters.he caught a yellow one and landed on the railing before flying to the nest.
I haven't heard a peep from the nest but I'm half deaf.