A medium-large sunbird with a rather thick, slightly decurved bill. Extremely plain: pale olive-yellow above and paler washed-out yellow below. Male has a small black “shield” on his forehead which the female lacks. Female readily distinguished from female Brown-throated and Red-throated Sunbirds by her unmarked face. Inhabits a wide range of forest types from lowlands into foothills but seems to favor coastal forest and forest edge. Forages and moves actively, like a warbler, gleaning insects from the foliage. Gives plaintive “tseee”s and “tsi”s.