Pearly-vented Tody-Tyrant

The pearly-vented tody-tyrant is about 10 to 11 cm (3.9 to 4.3 in) long and weighs 7 to 10 g (0.25 to 0.35 oz). The sexes have the same plumage. Adults of the nominate subspecies H. m. margaritaceiventer have a gray crown. Their lores and eye-ring are whitish on an otherwise grayish brown face. Their back and rump are drab grayish brown to brownish olive. Their wings are dusky with buff whitish to yellow edges on the flight feathers and tips of the coverts; the latter show as two wing bars. Their tail is dusky. Their throat and underparts are white with some faint grayish streaking. Voice: Though recordings of some subspecies are lacking, the pearly-vented tody-tyrant's vocalizations appear to be similar across its range. Its song has been described as a "modest, soft yet emphasized series...'tuc-tic-tuc-tuc-tuc-tuc' ". Other descriptions are "tip...tip...tiptrrtrrrrr", "tup tchup tchip ti-teeeeeerrrr", and "stick, tic-tic-ter'r'r'r'r'r'r'r'r'r'r".