チャバラオオツリスドリ Psarocolius bifasciatus

Large, dark oropendola of mature rainforest. Olive green with reddish brown wings and a bright yellow tail. Bill is black with colorful pink patch at the base and an orange tip. More likely to be found in mature upland forest than the similar Russet-backed Oropendola of open habitats. Nests colonially, building large hanging nests in the crowns of tall trees in the canopy.