There are at least 2 fledglings at bridge 3. I saw one one fall out of the nest. At the moment it’s hiding under the big log while the parents are feeding the other but I think they know it’s there. Female is still nest building.
Bridge 1 male near nest box resting.
Bridge 3 male near nest site singing and resting. The female from Bridge 3 seen feeding fledgling near Bridge 4.
2 photos of Bridge 3 fledgling by Roxanna Tessman: