Dunlin (Calidris alpina) and Willet (Tringa semipalmata) August 3, 2020 1929 × 1543 Dunlin (Calidris alpina) and Willet (Tringa semipalmata) Dunlin (Calidris alpina) and Willet (Tringa semipalmata), May 2018, Napeague. Late May, 2018. Napeague, Long Island. The Dunlin is migrating north; the willet will stay.