White-fronted Ground-Tyrant

Large, unmistakable hummingbird commonly encountered in both open and semiopen habitats, including forest edges, plantations, and urban areas. Males and females have a dark blue head and throat, a dark green back and belly, and a long, deeply forked dark blue tail. Makes a loud “buzzing” sound in flight and also gives a fast “tek-tek-tek.”

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.

A dark, medium-sized vulture with a bare reddish head and loose flaps on the side of the neck. Juvenile is browner with scruffy, pale feathers on the head. In flight, the species has narrow wings and appears dark overall with contrasting white patches on the flanks and a white line running through the wing. Inhabits dry forests and adjacent areas. Shy and solitary compared to other vultures in the region.