July 31, 2012 I stopped in at the duck river unit this afternoon to look for sedge wrens. I found about 15 in the same area as they were reported. I also found 2 immature tricolored herons, about 15 little blue herons, 1 yellow crowned night heron, 65 caspian terns, and 6 shorebird species. The 2 tricolored were wading with a group of little blues not far from the pump station. Ruben Stoll.