I think a sanderling

This was a few days ago on the secluded beach called Sandy Cove that I visited while tooling around on the Burin Peninsula.

At the time, I knew this was some sort of piper, but had no idea what sort. At home, I looked them up and decided it was a sandpiper. It and its friends spent the hour we were there chasing the waves back and forth, only startling into the air when I got too close.