 The superficially similar green oropendola has an olive back and wing-coverts, lacks extensive bare facial-skin, has a pale bill with an orange tip, and blue eyes.The olive oropendola is a canopy bird that most often is seen flying high over the tops of the trees.Compared to other oropendolas it is a "loner" most frequently seen alone or in pairs, and drawing less attention to itself than its cousins, despite the greater size.