The russet-backed oropendola (''Psarocolius angustifrons'') is a species of

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

in the family

Icteridae Icterids () or New World blackbirds make up a family, the Icteridae (), of small to medium-sized, often colorful, New World passerine birds. The family contains 108 species and is divided into 30 genera. Most species have black as a predominant ...

. It is found in wooded

habitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...

s in the highlands of the northern and central

Andes The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range ...

and the

Venezuelan Coastal Range The Venezuelan Coastal Range ( or ), also known as Venezuelan Caribbean Mountain System (), is a mountain range system and one of the eight natural regions of Venezuela, that runs along the central and eastern portions of Venezuela's northern coa ...

, and in lowlands of the western

Amazon Amazon most often refers to: * Amazon River, in South America * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon (company), an American multinational technology company * Amazons, a tribe of female warriors in Greek myth ...

. It is generally common and widespread. Males are larger than females, but otherwise the sexes are similar. Its

plumage Plumage () is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, there can b ...

is mainly

olive The olive, botanical name ''Olea europaea'' ("European olive"), is a species of Subtropics, subtropical evergreen tree in the Family (biology), family Oleaceae. Originating in Anatolia, Asia Minor, it is abundant throughout the Mediterranean ...

and brown, and the outer

rectrices Flight feathers (''Pennae volatus'') are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the Bird wing, wings or tail of a bird; those on the wings are called remiges (), singular remex (), while those ...

are contrastingly yellow. The lowland

nominate subspecies In biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics ( morphology), but that can successfully interbreed. ...

has a black bill, while the highland

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

all have pale bills. These have been regarded as separate species, but as they hybridize freely, all major authorities now regard them as a single species. Russet-backed Oropendola JCB.jpg, Black billed subspecies in the lowlands of eastern Ecuador Russet-backed oropendolas (Psarocolius angustifrons salmoni) pair grooming Las Tangaras.jpg, Pair of ''P. a. salmoni'', grooming, Colombia

References

russet-backed oropendola Birds of Colombia Birds of the Venezuelan Andes Birds of Ecuador Birds of Peruvian Amazonia Birds of Bolivia Birds of the Amazon rainforest russet-backed oropendola Taxonomy articles created by Polbot {{Icteridae-stub