I posted two bird stories recently.
First I had black-capped chickadees cleaning out a hole in the big stump in my yard. They worked for three weeks and then suddenly the chickadees were gone and two red-breasted nuthatches worked on the hole.
The nuthatches nested. First, I watched the male come and go with food. Then both adults carried food.
I wanted to get photos of the little guys. I tried. I waited at the stump. They would not poke their heads out while I was near. I knew they were close to fledging.
This morning when I looked out something seemed different. There were no parents going back and forth. I have to assume that the little guys fledged and are somewhere else in the neighborhood.