Female: above grey, densely striated with black; beneath dirty white, with dense black striations, belly and crissum fulvous.
Below, greenish buff paler and yellower on abdomen and crissum.
Below, pale yellowish wood-brown, straw-yellow on abdomen and crissum.
The rump is also much more yellow (less green) and the crissum is more yellow (less orange).
Below, olive-yellow darker on the flanks, the abdomen and crissum white.
In addition the dorsal region is more greenish-olive, and the abdomen and crissum of a purer white.
Below, bright lemon-yellow, the crissum white or merely tinged with yellow.
The mature male is purplish-gray below, with a tendency to whitening on the throat, belly and crissum.
Below grayish buff rapidly fading when older to a greenish gray; abdomen and crissum pale straw-yellow.
Female olive-brown, paler below, chin pale ochraceous; middle of belly and crissum white; bill brown, feet yellowish.