The Willet, Tringa semipalmata (formerly in the monotypic genus Catoptrophorus, as Catoptrophorus semipalmatus), is a large shorebird in the sandpiper family. It is a good-sized and stout scolopacid, the largest of the shanks. Its closest relative is the Lesser Yellowlegs, a much smaller bird with a very different appearance apart from the fine, clear and dense pattern of the neck which both species show in breeding plumage.
