Identification & amp; Behavior: Males (46-47.7 cm) (18-18.5 in), Females (36-37 cm) (14-14.5 in) . The Crested Oropendola is large and all black. The bill is heavy and pearly white in color. The iris is sky blue. It has an inconspicuous wispy hair-like crest. As with other oropendolas, the Crested Oropendola has a bright golden yellow tail with a central dark pair of feathers. The heavy wing beats are audible from birds in flight. It is the only large and black Oropendola. The Crested Oropendola superficially resembles a Band-tailed Oropendola but it is much larger.
Status: The Crested Oropendola is common in forest canopy, forest edges, and second growth. Often forage in the company of other oropendolas and caciques. Mostly in Amazon lowlands up to 1,000 m along the foothill of the Andes. It also occurs in Co, Ef, Br, and Chile,