Solitary Sandpipers can be seen in April-May and August-September. They are 9 inches long, with a dark back with light spots and a high pitched whistle. Spotted Sandpipers can be seen in April-September. They are 8 inches long and are found near ponds or streams, sometimes in nearby weedy areas, with a spotted breast in summer, a white shoulder in winter, a short neck, and a high pitched whistle.