Size: L: 12 cm. Wt: 6-7 g. Males and females are dimorphic in colour.

Adult Male: upperparts olive, with small black cap and large, black eyes; face and underparts yellow; bill narrow, pointed, with blackish upper mandible and pale orange lower mandible; legs orange

Adult Female/Juvenile: upperparts olive, without black cap; face light olive-yellow; forehead yellowish; underparts yellow; bill and legs as in adult male