The Opal-rumped Tanager (Tangara velia) is a species of bird

Bird

Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...

 in the Thraupidae family. It is found in the Amazon

Amazon Rainforest

The Amazon Rainforest , also known in English as Amazonia or the Amazon Jungle, is a moist broadleaf forest that covers most of the Amazon Basin of South America...

 and Atlantic Forest of South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

. The population of the Atlantic Forest has a far paler chest than the other populations, and has often been considered a separate species as the Silvery-breasted Tanager

Silvery-breasted Tanager

The Silvery-breasted Tanager is a subspecies of the Opal-rumped Tanager but sometimes considered a distinct species Tangara cyanomelas...

 (Tangara cyanomelas). Today most authorities treat it as a subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

of the Opal-rumped Tanager.