I saw the Prothonotary Warbler again in the southeast corner of the CSU Environmental Learning Center at 4:45pm (after Nick Komar was there). Bird was silent and not moving much, so it was hard for me to locate. After I photographed it it flew downstream towards Arapahoe Bend natural area.
Foraging at he waters edge underneath willow bushes. Originally found by Jay Breidt earlier this morning.