The female differs from the male only in being smaller, and in having the tints of the plumage somewhat less vivid.
Length 8½ inches.
Young Birds. Plate XXVII. Fig. 3, 3, 3.
The young when fully fledged have the bill and iris dark brown, the feet bluish. The head and neck are dark brownish-grey, mottled with small streaks of dark brown; the back and wing-coverts of the same colour, spotted with darker; the primaries brownish-black, margined with whitish, the secondaries yellowish-white, barred with black; the tail brownish-black, tipped with white; the rump and under parts greyish-white.