The heron rookery was filled with the expected species and I also saw an adult Little Blue Heron mixed in.
There were two pairs of Common Gallinules (one each in Cells 1A and 3D) and I saw a Least Bittern out in the open in Cell 1A. Nesting was also recently confirmed for American Oystercatcher.
Lingering waterfowl included Gadwall, Northern Shoveler, Green-winged Teal, Greater Scaup, Lesser Scaup, Surf Scoter, White-winged Scoter, Black Scoter, Long-tailed Duck, and Red-breasted Merganser.
Shorebirds included most of the expected species plus a Sanderling and an early Stilt Sandpiper.
No Common Terns or Bank Swallows - yet. My coworker also recently reported a Black Rail, but after a thorough search of the area, I did not relocate it.
Full eBird list: http://ebird.org/ebird/view/checklist/S36310483
Tim Carney
Nottingham, MD