Fire-eyed Diucon

Striking and distinctive small finch-like tanager of the Chaco desert from central Argentina to W Paraguay and S Bolivia. Prefers open cactus and thorn woodland, often near roads and settlements. Generally in pairs or small groups. Range overlaps with Gray-crested finch in southern Bolivia. Juveniles of these two species are similar but note Black-ctrested’s broad supercilium.

Fairly small fork-tailed hummingbird of lowlands. Males have an iridescent green head and breast and a violet belly, but in poor light appears evenly dark overall. Females are green above, light gray below. Note the slightly drooping bill on both sexes. One of the most common hummingbirds in lowland Amazonia; found in a variety of open forested habitats from young rainforest and forest edges to treefall gaps and gardens.

A shy but loud bird of forests and forest edges that usually stays within cover. Shaped like a greenbul, but has a thicker, more robust bill. Shows grayish underparts, greenish upperparts, yellow spots on the tips of the flight feathers and upperwing coverts, a yellow throat, and yellow lores. Similar to the larger Western Nicator, but note Yellow-throated’s smaller size, yellow throat and lores, and distinctive song, which often betrays its presence: a sputtering series of notes that can be surprisingly resonant and loud, a “p-p-p-po-keer-ko-wheeeer-pop” and other variations. Call is a growling trill, “prrrrrr.”