Olive Oropendola, Mitu, Colombia

The olive oropendola is the largest member of the icterid family and rivals the Amazonian umbrellabird as the largest passerine bird in South America. It is sometimes split into two species, the western olive oropendola and the eastern Pará oropendola, but the subspecies "P. y. neivae" is widely recognized as a hybrid swarm, and the vast majority of authorities consider them a single species.