At my cottage, when I was a child, I watched the sandpipers turn from black to white to black to white above the beach with my grandfather. The sandpipers remind me of him, and then, and the rocky beach on the Minas Basin, and the cottage, and everything. The sandpipers made their nests in little holes in the cliff face.
I finally figured out the proper name... it's the Semipalmated Sandpiper.
Image taken from Birds of Nova Scotia by Robie Tufts.
Sandpipers in flight over the Bay of Fundy: (the end is the best part)
Video from janetkateleighan's YouTube channel.