Large, marsh-dwelling shorebird of wetlands, wet meadows, and both flooded and dry agricultural fields. Extremely difficult to distinguish from other species of snipe, especially Swinhoe's Snipe, and careful study and photography usually required to confirm identification. Thin gray outer tail feathers (for which it is named) only visible when tail is spread but diagnostic. Lacks Common Snipe's eye-catching white trailing edge of the wing. Averages less buffy than both Common and Swinhoe's, with slightly bolder white edgings to the wing feathers. Much darker and more richly colored than pale Latham's Snipe. In flight, toes project well beyond tail, unlike in other Asian snipe. When flushed, gives a rasping call that is not as loud as Common Snipe’s call; also flies less erratically than that species.