Small flycatcher found in canopy of lowland and foothill forest in northwestern Ecuador and southwestern Colombia. It has olive-green upperparts, pale gray underparts, yellow spectacles, and yellow fringes to the wing feathers. May overlap with the very similar Golden-faced Tyrannulet in the western Andes of Colombia; in that region, ID is best confirmed by voice. Vocalizations include a soft whistle repeated every few seconds and a quick series of rising notes. Perches conspicuously high in the trees, and often holds its tail partly cocked.