Along the shores of the Great Lakes, hidden in the pebble-covered sand, a tiny, big-eyed bird makes its nest on the beach. Meet the piping plover, a robin-sized shorebird named for its sweet, musical call. The Great Lakes piping plover population is endangered. In the 1980s, the population had dwindled to just 12 pairs. But the population has grown thanks to the hard work of researchers and biologists on the Great Lakes Piping Plover Conservation...