The chivi vireo is a small South American songbird in the family Vireonidae. It was formerly considered a subspecies of the red-eyed vireo. It is usually green to yellow-green in color with off-white underparts, and a gray crown. It has a whitish supercilium extending over its ear coverts, and its lores are dull gray in color. The chivi vireo has nine subspecies. It is found throughout most of northern, eastern and central South America, only being absent from southern Chile and southern Argentina. It inhabits multiple types of habitat across its range, and appears to adjust well to slightly disturbed habitat. The chivi vireo is mainly resident, but at least two of the subspecies inhabiting the south of its range are known to be migratory.
The chalk-browed mockingbird is a bird in the family mimidae. It is found in Brazil, Bolivia, Argentina, Paraguay, Suriname, and Uruguay.
The fawn-breasted tanager is a species of tanager with a blue head and yellow breast. It occurs in the Andes of northwestern Argentina, Bolivia, Colombia, Ecuador, Peru and Venezuela, as well as in the highlands of northeastern Argentina, south Brazil, Paraguay and Uruguay.
The great dusky swift is a species of bird in subfamily Cypseloidinae of the swift family Apodidae. It is found in Argentina, Brazil, Paraguay, and possibly Bolivia.
The pearly-breasted cuckoo is a species of bird in the tribe Phaenicophaeini, subfamily Cuculinae of the cuckoo family Cuculidae. It is found in Argentina, Bolivia, Brazil, Ecuador, French Guiana, Guyana, Paraguay, Suriname, Venezuela, and possibly Colombia and Panama.
The spot-winged falconet is a species of bird of prey in subfamily Falconinae of family Falconidae, the falcons and caracaras. It is found in Argentina, Bolivia, Paraguay, and possibly Uruguay.
Olrog's gull is a species of gull found along the Atlantic coast of southern Brazil, Uruguay, and northern Argentina. It was formerly considered a subspecies of the very similar L. belcheri. It is a large gull with a black back and wings, white head and underparts, a black band in the otherwise white tail, and a yellow bill with a red and black tip. Nonbreeding adults have a blackish head and a white eye ring. The species is named after Swedish-Argentine biologist Claes C. Olrog. It has a rather restricted breeding range and is threatened by habitat loss, and the IUCN has rated it as being "near threatened".
The snowy-crowned tern, also known as Trudeau's tern, is a species of bird in subfamily Sterninae of the family Laridae, the gulls, terns, and skimmers. It is found in Argentina, Brazil, Chile, Uruguay, and possibly Paraguay, and also as a vagrant to Peru and the Falkland Islands,.
The white-winged coot is a species of bird in subfamily Rallinae of family Rallidae, the rails, gallinules, and coots. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, Uruguay, and the Falkland Islands.
The tawny-headed swallow is a species of bird in the family Hirundinidae. It is monotypic within the genus Alopochelidon. It is found in Argentina, Bolivia, Brazil, Colombia, Falkland Islands, Paraguay, Peru, Uruguay, and Venezuela, where its natural habitats are dry savanna and subtropical or tropical seasonally wet or flooded lowland grassland.
The scimitar-billed woodcreeper is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, Brazil, Paraguay, and Uruguay.
The scalloped woodcreeper is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is found in Argentina. Brazil, Paraguay, and Uruguay.
The white-banded mockingbird is a species of bird in the family Mimidae. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, and Uruguay.
The screaming cowbird is an obligate brood parasite belonging to the family Icteridae and is found in South America. It is also known commonly as the short billed cowbird.
The wren-like rushbird is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, Peru, and Uruguay.
The brown-and-yellow marshbird is a species of bird in the family Icteridae.
The white-rumped swallow is a species of bird in the family Hirundinidae. First described and given its binomial name by French ornithologist Louis Vieillot in 1817, it was for many years considered a subspecies of the Chilean swallow. The species is monotypic with no known population variations. It has a white supraloral streak, or streak above its lores, which can be used to differentiate it from the Chilean swallow. The lores, ear coverts, tail, and wings are black, with white tips on the inner secondaries, tertials, and greater coverts of the wings. The rest of the upperparts are a glossy blue. Its underparts and underwing-coverts are white, in addition to the rump, as the name suggests. The sexes are similar, and the juvenile is duller and browner with a dusky breast.
The Chilean swallow is a species of bird in the family Hirundinidae. It breeds in Chile and Patagonia, migrating north as far as Bolivia, Paraguay, and Rio Grande do Sul.
The campo flicker is a species of bird in subfamily Picinae of the woodpecker family Picidae. It is found in Argentina, Bolivia, Brazil, Paraguay, Suriname, and Uruguay.
The yellow-browed woodpecker, also known as the white-browed woodpecker, is a Near Threatened species of bird in the woodpecker family Picidae. It is found in Argentina, Brazil, Paraguay, and Uruguay.
