Olive Bushshrike

Unusual weaver that is black with a yellow face and a long, thin bill. Males have a black throat, while females have an all-yellow head save for a black mark around the eye. Males in the west have a yellow band across the breast, while in the east the breast is all black. Found in the understory and mid-story of montane forest. Usually in pairs, which creep through thick vegetation. Vocalizations include “chyet” notes and a sizzling, “radio static” song.

Mostly arboreal guan endemic to the semi-humid forest with Podocarpus and alders of the mid-elevation east Andes in southern Bolivia and northeast Argentina. Often in ravines and river basins. The sympatric Dusky-legged Guan is more common, but shows grayish-blue skin around the eye. Tends to perch high in trees, singly or in pairs, and often found by far-carrying vocalizations given from high in trees. Note pale supercilium, dull pinkish legs, exposed red orbital skin and wattle.

Large, dark oropendola of mature rainforest. Olive green with reddish brown wings and a bright yellow tail. Bill is black with colorful pink patch at the base and an orange tip. More likely to be found in mature upland forest than the similar Russet-backed Oropendola of open habitats. Nests colonially, building large hanging nests in the crowns of tall trees in the canopy.