A small bird of forest and edge from the lowlands to middle elevations in the mountains. Olive-green on the back and golden-olive on the wings and tail, with a dark crown and eye-stripe. Has a pale belly, a lemon-yellow throat and eyebrow, and yellow under the base of the tail. Note the dark legs and bicolored bill, dark above and orange below. Similar to Philippine Leaf Warbler, but has a pale yellow throat. Differs from Arctic-type warblers in lacking any wingbars. Song consists of varied high-pitched whistles interspersed with staccato trills.