A Sandpiper?

[Tom Walter]

I shot this bird at low tide on the exposed bar that leads to Bar Island in Bar Harbor, Me. It was in a flock of about 15 little birds like it along with Semipalmated Plovers. Could this be a juvenile Black-bellied Plover or is it some kind of sandpiper?

NikonD7000
Nikon70-300 4.5-5.6G VR
1/1250sec at f/8 and 300mm
ISO400
Handheld