Pearled Treerunner

The pearled treerunner is 15 to 16 cm (5.9 to 6.3 in) long and weighs 14 to 19 g (0.49 to 0.67 oz). The sexes have the same plumage. Adults of the nominate subspecies have a well-defined yellowish buff supercilium that extends to the nape, a dull reddish brown line behind the eye, dull yellowish buff and dark brown ear coverts, and a dark brown moustacial area with tiny whitish spots that become streaks to the rear. Their forehead is dark brownish with pale rufous streaks and their crown dark reddish brown. Their collar is dull rufescent brown with black-outlined yellowish buff streaks. Voice: The pearled treerunner is not highly vocal. Its song is "a rapid series of high-pitched, thin 'tick' notes,". Its calls are "a single high-pitched 'tick' or 'tsit' short trill, 'trrrt-trrrt' ".