Falcons and Caracaras
Crested Caracara
Parrots, Parakeets, and Allies
Monk Parakeet
Antbirds
Great Antshrike
Woodcreepers
Scimitar-billed Woodcreeper
Narrow-billed Woodcreeper
Ovenbirds
Rufous Hornero
Wren-like Rushbird
Buff-winged Cinclodes
Freckle-breasted Thornbird
Greater Thornbird
Lark-like Brushrunner
Brown Cacholote
Yellow-chinned Spinetail
Chotoy Spinetail
Tyrant Flycatchers: Elaenias, Tyrannulets, and Allies
Many-colored Rush Tyrant
Southern Beardless-Tyrannulet
Suiriri Flycatcher
Crested Doradito
Large Elaenia
White-crested Tyrannulet
Tyrant Flycatchers: Pewees, Kingbirds, and Allies
Spectacled Tyrant
White Monjita
Black-backed Water-Tyrant
Great Kiskadee
Fork-tailed Flycatcher
Vireos
Rufous-browed Peppershrike
Martins and Swallows
Bank Swallow
White-rumped Swallow
Gray-breasted Martin
Brown-chested Martin
Barn Swallow
Gnatcatchers
Masked Gnatcatcher
Wrens
Southern House Wren
Catbirds, Mockingbirds, and Thrashers
Chalk-browed Mockingbird
Wagtails and Pipits
Yellowish Pipit
New World Sparrows
Grassland Sparrow
Rufous-collared Sparrow
Blackbirds
Grayish Baywing
Unicolored Blackbird
Yellow-winged Blackbird
Chestnut-capped Blackbird
Brown-and-yellow Marshbird
Wood-Warblers
Southern Yellowthroat
Tanagers and Allies
Red-crested Cardinal
Yellow-billed Cardinal
Grassland Yellow-Finch
Great Pampa-Finch
Rusty-collared Seedeater
Bluish-gray Saltator