Semipalmated Sandpiper (Calidris pusilla) August 3, 2020 1807 × 1205 Semipalmated Sandpiper (Calidris pusilla) Semipalmated Sandpiper (Calidris pusilla), August 2017, Napeague. Migrant. NEAR-THREATENED. Late August, 2017. Napeague, New York. Shores. Migrant. NEAR-THREATENED (IUCN).