Levaillant's Cuckoo

Uncommon swift found along the east slope of the Andes from central Bolivia to northwestern Argentina. Uniform sooty brown, lacking any strong plumage characteristics. Easily confused with Sick’s Swift, but is larger with longer wings, giving it a sleeker and more aerodynamic appearance; also lacks a pale throat, though this is often hard to see clearly. In central Bolivia it could be mistaken for Chestnut-collared Swift (some of which lack a chestnut collar), but wings are slightly narrower at the base. Usually seen in flocks of a few birds up to 20 or more that circle over humid forest.

Chunky, large-billed bird of rainforest canopy; easily identified by black-and-white plumage, relatively large size, and staid demeanor. Most often seen perched high in bare branches, sometimes near arboreal termite nests, in which it digs its own nest cavities. May also forage at lower levels. Sits motionless for long periods, sallying to vegetation for large insects. Superficially resembles Pied Puffbird but is much larger with a solid black crown and more white on the forehead.

An active and social small bird of broadleaf and mixed forests, usually in hilly regions. Thin, rather turnip-like crest is often held vertically. Gray with a black head marked by bright white cheek patches. May be confused with Coal Tit, but has a less wispy crest, lacks wingbars, and averages darker and more contrasting overall. Gives high thin calls, often heard as a flock whizzes overhead.