Black-crested Finch

Small bird of open arid shrubland and grasslands. Pale brown above, whitish below, with distinct pale supercilium, faint chest streaking, and long, cocked tail. Forages quietly on the ground or in thick vegetation, where difficult to see. Most easily observed when males sing in spring, as they perch up in the vegetation. Similar to Western Fieldwren but no range overlap. Compare Shy Heathwren, which has a white wing spot and darker legs.

A heavily built black-and-white bushshrike. The upperparts are cleanly black and the underparts are white with a pinkish tinge. Uses habitats with a dense understory, including riparian thickets, coastal scrub, forest, and gardens. Found in pairs, which usually skulk but sometimes hop about in the open. Similar to Tropical Boubou, but barely overlaps in range and lacks a white shoulder patch. Also similar to the smaller Black-backed Puffback, but separated by the lack of white on the upperparts. Has a diverse range of vocalizations, including a hollow rising whistle, up-and-down “laser gun” notes, rasps, and croaks, often delivered in a duet by a pair. 

Tiny, bubbly, buffy-colored wren of dense grassy or shrubby habitats. Fairly common but locally distributed from central Mexico to the southernmost tip of South America; surely comprises multiple species. Occurs from open grasslands and marshes at sea level up to paramo in the high Andes. Generally secretive, but perches up when singing. Generally pale brownish with complex patterning on upperparts; compare with much plainer House Wren. Variable voice, usually including harsh chips, buzzes, and trills.