"Adult male in breeding plumage.--Above blackish, striped and mottled with sandy isabelline; streaks on the sides of back and scapulars very broad; upper surface interspersed with rufous spots, but general color of the light markings sandy buff, especially on hind neck; wing-coverts dark brown, marginal series almost uniform, the rest barred with rufous or sandy buff, with paler tips, the rufous and black bars very distinct on the greater coverts, where they are regularly indicated; alula and primary-coverts blackish, with narrow white tip; quills blackish, the first primary browner on outer web, which is narrowly fringed with white; secondaries (outermost of which do not exceed primary-coverts in length) narrowly fringed with white at tip, inner ones barred with rufous and blackish, mostly on outer web; innermost long secondaries barred across, especially near the ends; tail-feathers blackish brown, ten central ones with a broad band of pale chestnut, followed by a subterminal bar of blackish brown, before a pale rufescent tip; a second rufous band, considerably broken up, a little beyond the middle of the feather; eight outer feathers on each side becoming narrower and narrower, till the outermost has scarcely any web at all; these wire-like feathers with white tips, with an indication of a blackish subterminal bar; crown black, mottled with rufous spots and having a mesial streak of sandy isabelline; a loral line of black, surmounted by a supra-loral patch of sandy isabelline continued into a narrow eyebrow; sides of face and ear-coverts isabelline, rufous just behind eye, entire sides of face having more or less distinct small streaks of blackish, and traversed by a broad blackish line across ear-coverts; fore part of cheeks and chin sandy isabelline; throat and chest sandy buff, slightly mottled with streaks and narrow horseshoe-shaped bars of blackish; breast and abdomen white; sides of body slightly tinged with sandy buff, and distinctly barred with black; under tail-coverts pale sandy buff, with blackish centers, longer ones narrowly barred with black near their ends; under wing-coverts and axillars distinctly barred with black and white, white bars on the latter slightly wider than the black bars; lower primary-coverts ashy; quills ashy below, secondaries fringed with white at the ends. 'Basal half of upper bill horny, distal half blackish brown; basal half of lower bill greenish, remainder blackish brown; feet greenish; iris brown.' (Cripps.) Length, 223; culmen, 58; wing, 124; tail, 48; tarsus, 30. "Adult female.--Does not perceptibly differ from the male in color and markings. Length, 240; culmen, 62; wing, 129; tail, 44; tarsus, 30.