We had a Least Bittern on the Marsh Discovery Trail on the left-side as you leave the gurad-station entrance. Saw it around 5:30 p.m., on the big island before you get to the Ruddy Duck Channel.
Two photographers reported good if sporadic looks at a Sora on the right, just past the first seating area.
Pretty sure I had a Clapper Rail on the edges in the East Pool, but some loud yutes arrived and it disappeared into the reeds before we could get a pic.