In breeding plumage the Greater Yellowlegs is a striking bird, with dense, dark bands on the breast and neck. Most of the year, the pattern is more subdued: a black and white checkerboard of speckling on the back, with a finely streaked neck and head. There is usually some barring on the flanks and a bright, white eyering. Bill is dark. In all plumages, legs are appropriately bright yellow, occasionally orange in spring. https://www.allaboutbirds.org/guide/Greater_Yellowlegs/id