Brown-and-white denizen of bubbling streams and brooks. Stays on the ground or in low vegetation, constantly bobbing its rear end up and down. During the breeding season, favors steeper ravines with hemlocks and fast-moving water with lots of rocks to hop on. Much like Northern Waterthrush, but whiter base color below, brighter pink legs, and broader white eyebrow. Distinctly different song: several piercing clear whistles followed by a complex jumble of notes. Call is a loud, metallic chip.