The young Eastern Bluebirds have all fledged. The birdhouse is now empty. I took it down and opened it. Nothing inside except for a nest made with dried grass. There was no eggshell (maybe it was eaten by the babies or their parents), and the nest did not look too bad. No fecal sac, just some dirt at the bottom of the nest. Still I used a hose to spray it with water thoroughly to make it clean again. It is now back in its old place waiting for the Bluebirds to raise their next brood.
The fledglings are flying around our backyard practicing their newfound skills. Some also dive to the grass to look for food. One newly fledged chirped plaintively as it landed near me on the deck.
An older sister was at the top of a magnolia tree, looking all around her to see whether she could spot her parents.
However, the parents are keeping their distance, perched very near the top of the surrounding trees. They won’t intervene, unless there is a threat from a bigger bird, like a Blue Jay.