Western Olivaceous Flatbill

Distinctive large oropendola with a small range from eastern Panama into Colombia. Overall black with dark chestnut on back and wings. It has an orange-tipped bill with large patch of blue skin at the base. Sexes similar. Found in pairs or small groups in the canopy or subcanopy of lowland forest and edge up to 800 m elevation. Often found along rivers. Like other oropendolas, builds large hanging nests. Recalls Montezuma Oropendola but no range overlap; also compare with rare Baudó Oropendola, which has pink (not blue) patch on the face.

Medium-sized honeyguide with a plain face, a slim pale bill, yellow legs, and large white patches in the outer tail. Found in the middle levels and canopy of humid forest at low and middle elevations. The distinctive vocalization is a series of around a dozen rising “sveeya” notes. The series slows down and becomes slightly lower-pitched at the end. Very similar to Zenker’s Honeyguide, but there is only minor overlap in range, and Yellow-footed is paler overall with more white in the tail. Similar to other honeyguides, but separated by the slim bill and the yellow legs. Separated from most greenbuls by the white in the tail, and from Honeyguide and Sjöstedt's Greenbuls by the smaller size and shorter tail. 

Large warbler with a dark head contrasting with white throat. Pale eye in adults. Told from Eastern Orphean Warbler by its browner (not gray) back and plain buffy (not spotted) undertail. Breeds in deciduous woodland and tall scrub, orchards, abandoned gardens, and riverine belts. Spends the non-breeding season in dry open habitats with sparse trees and scrubby plant cover. Song is simple and quite different from Eastern: "Turu turu turu turu.... liru liru turu." Call is a clicking "teck."