Flashy black-and-yellow oriole of humid tropical lowlands. Favors tangles and thickets along rivers and near water, also overgrown fields. Usually in pairs, often rather skulking. Both sexes have black back and wings with a big yellow shoulder bar, black tail with yellow sides that flash in flight. Immature has same pattern but duller, with a greenish back. Rich whistled song has a rollicking, rhythmic cadence.