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Russet-backed Oropendola perched on bamboo feeder with yellow tail feathers, brown plumage, and a large pointed yellow beak in profile
Psarocolius angustifrons (Russet-backed Oropendola)

Psarocolius angustifrons is distributed across the northern Andes and adjacent lowlands, with populations found in Colombia, Ecuador, Peru, Bolivia, Venezuela, and western Brazil. This bird typically inhabits humid forests, forest edges, and secondary growth between elevations of 1,000 and 8,500 feet. While it prefers montane forests, it also adapts to disturbed areas and can occasionally be observed in agricultural zones adjacent to forest cover. Its range is extensive, and the species is considered widespread and plentiful across much of its habitat. Its conservation status is listed as Least Concern.

The bird measures about 16 to 18 inches in length. Adults display a combination of chestnut-brown body feathers, blackish wings, and a long, sharply graduated yellow tail. The species is recognized by its large, conical yellow bill and dark facial skin. Males and females are similar in coloration, though males are generally larger. Psarocolius angustifrons nests colonially, often building dozens of long, pendulous nests—some exceeding 5 feet—dangling from tall trees or cliffs near water. These colonies are typically noisy, with complex vocalizations that include rattling, clucking, and mimicry, produced with body sways and bowing gestures. During the breeding season, dominant males defend territories within nesting colonies, displaying aggressive behavior toward rival males while courting females through ritualized movements and calls.

Russet-backed Oropendola standing on cut bamboo with its rich chestnut body, black wings, and long yellow tail visible under sunlight

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