At the North Beach marsh in Calvert County this afternoon, there were a few good waders in addition to the usual (30) Snowy Egrets -- a Tricolored Heron, a Glossy Ibis, and an immature Yellow-crowned Night-heron.   I didn't see any interesting shorebirds, mostly Killdeer and Least Sandpipers, with a few Semipalmated Sandpipers.

John Hubbell
Washington DC