The Golden-Sided Euphonia is a small tanager-like finch of rainforest canopy. Male usually appears entirely black; golden tufts on sides of chest are diagnostic but can be difficult to see; note jaunty posture and voice. Female is green above and extensively gray below.
Feeds on fruit and often follows mixed-species flocks; may call repeatedly from a hidden perch before flying to another distant tree. Female resembles White-lored Euphonia, but has more clean-cut appearance and gray (not yellow) undertail coverts; presence of male should aid identification of female. Most common is call a loud, grating chatter that is distinctive once learned.
The Gold-Sided Euphonia size: 11cm