I had a good morning walk around Schoolhouse Pond this morning.  Highlights 
included a singing Blue-winged Warbler in the woods at the rear of the pond 
near the observation platform.  Other warblers included a singing Hooded 
Warbler, several Parula, Yellow-rumped Warblers, and a singing Yellow 
Warbler.  Shorebirds were also numerous, with several Killdeer, 2 Solitary 
Sandpipers, 4 Spotted Sandpipers, and 9 Least Sandpipers.  Flyover gulls 
included 220 Laughing Gulls, 13 Ring-billed Gulls, and 2 Bonaparte's Gulls.

Fred Shaffer
Patuxent MOS