A quick couple of hours birding

Pectoral Sandpiper

I worked a split double today but had a few hours off in the afternoon. I went back to Charlestown for some birding. There were a lot of birds but not a lot of variety. By far, the best bird  I got was Pectoral Sandpiper. It is not super rare, but all of the other birds were the very common shorebirds. I spent roughly two and a half hours on the flats.
A few pics below

Saltmarsh Sparrow

Greater Yellowlegs

Semi-palmated Plover