Saw at least 2 of the chicks, maybe 3. Did not see either Beau or Jules.
When I arrived, one chick flew off the nest box building flew over the park then circled around and around, drifting away, then flew up the south face of the Bleachers and landed at the top. About 15min later one chick flew over me and landed half way down the west wall from the nest box. Didn't stay long. Flew up, circled the building then travelled south, circling further and further away, till she was just a dot. Just as she was disappearing, a chick flew off the south side of the building, flew over me and landed on the NW corner where the nest box is. Stayed all of 30 seconds then took off east.
I don't know if the first chick was one of the 2 chicks I saw later.