Baird's Sandpipers
The wing tips look like they extend a little past the tail and the legs are dark.
BD: Agree those are Baird's. That particular brown color on the breast and elsewhere is unique to them, lacks any rufous tone and looks golden in good light, sort of like an oil stain in bad light. The black centers on the scapular feathers are more or less symmetrical, not pointed like arrowheads and not anchor-shaped. The long wings give the whole bird a long shape. From the front they look very short and broad, oval in cross-section.