Dusky-capped Greenlet

Streaked brown above and yellow below with distinctive black "V" on breast. In flight, short wings and spiky tail with white outer feathers are apparent. Breeds in fields and grasslands throughout much of western North America, regularly as far east as Michigan. Winters in a wider range of open habitats, even agricultural fields and roadsides. Extremely similar to Eastern Meadowlark and best distinguished by voice: listen for musical gurgling song and "chuk" calls. In winter, plumage looks paler and more washed-out than Eastern Meadowlark, with a less contrasting head pattern. Western is also more likely to be in flocks and areas with shorter grass (less pristine, extensive grasslands).

Striking tanager of open woodland, consisting of two relatively distinctive subspecies. Distinguished from other warbling-finches in range by its black breast band. Nominate torquatus is a resident of the southern Bolivian Andes, especially open scrub and cactus forest of the dry valleys. Migratory pectoralis shows a thicker breast band and darker undertail coverts, and breeds in the Pampas, Monte, and northern Chaco dry forests in north central Argentina, dispersing north to lowlands of W Paraguay and SE Bolivia.

Medium-sized woodcreeper with a short bill. Found in the lower to middle levels of humid forests where it moves restlessly. Rather uniform rufous-brown overall with a brighter tail and a buff throat. Often associated with army-ant swarms and sometimes follows mixed-species flocks, but can also be encountered alone. The northern subspecies lacks the buff throat and has more rufous in the wings and tail.The song is a long (~60 seconds) series of “tchip-tchip-tchip” notes.