Shorebirds
Black-necked Stilt
Rufous-chested Dotterel
Southern Lapwing
Collared Plover
South American Painted-Snipe
Wattled Jacana
Pantanal Snipe
Lesser Yellowlegs
Greater Yellowlegs
Baird's Sandpiper
Pectoral Sandpiper
Gulls, Terns, and Skimmers
Brown-hooded Gull
Gray-hooded Gull
gull sp.
Black Skimmer
Yellow-billed Tern
Large-billed Tern
Gull-billed Tern
Snowy-crowned Tern
Storks
Maguari Stork
Jabiru
Wood Stork
Cormorants and Anhingas
Neotropic Cormorant
Herons, Ibis, and Allies
Rufescent Tiger-Heron
Black-crowned Night Heron
Whistling Heron
Snowy Egret
Striated Heron
Western Cattle Egret
Great Egret
Cocoi Heron
White-faced Ibis
Bare-faced Ibis
Roseate Spoonbill
Vultures, Hawks, and Allies
White-tailed Kite
Snail Kite
Long-winged Harrier
Savanna Hawk
Roadside Hawk
Harris's Hawk
Owls
Tropical Screech-Owl
Great Horned Owl
Ferruginous Pygmy-Owl
Burrowing Owl
Short-eared Owl
Kingfishers
Ringed Kingfisher
Amazon Kingfisher
Green Kingfisher
Woodpeckers
White-barred Piculet
White Woodpecker
White-fronted Woodpecker
Checkered Woodpecker
Green-barred Woodpecker
Campo Flicker
Falcons and Caracaras
Crested Caracara
Chimango Caracara
American Kestrel
Aplomado Falcon
Parrots, Parakeets, and Allies
Monk Parakeet
Antbirds
Great Antshrike
Variable Antshrike
Woodcreepers
Scimitar-billed Woodcreeper
Narrow-billed Woodcreeper
Ovenbirds
Rufous Hornero
Wren-like Rushbird
Buff-winged Cinclodes
Tufted Tit-Spinetail
Greater Thornbird
Firewood-gatherer
Lark-like Brushrunner
Sharp-billed Canastero
Brown Cacholote
Yellow-chinned Spinetail
Chotoy Spinetail
Pale-breasted Spinetail
Sooty-fronted Spinetail
Cotingas
White-tipped Plantcutter
Becards, Tityras, and Allies
White-naped Xenopsaris
White-winged Becard
Tyrant Flycatchers: Elaenias, Tyrannulets, and Allies
Many-colored Rush Tyrant
Southern Beardless-Tyrannulet
Suiriri Flycatcher
Yellow-billed Tit-Tyrant
Crested Doradito
Warbling Doradito
Ticking Doradito
Small-billed Elaenia
Large Elaenia
Sooty Tyrannulet
White-crested Tyrannulet
Straneck's Tyrannulet
White-crested/Straneck's Tyrannulet
Tyrant Flycatchers: Pewees, Kingbirds, and Allies
Southern Scrub-Flycatcher
Vermilion Flycatcher
Austral Negrito
White-winged Black-Tyrant
Spectacled Tyrant
Yellow-browed Tyrant
White Monjita
Black-crowned Monjita
Gray-bellied Shrike-Tyrant
White-headed Marsh Tyrant
Black-backed Water-Tyrant
Swainson's Flycatcher
Cattle Tyrant
Great Kiskadee
Streaked Flycatcher
Crowned Slaty Flycatcher
Tropical Kingbird
Fork-tailed Flycatcher
Vireos
Rufous-browed Peppershrike
Chivi Vireo
Martins and Swallows
White-rumped Swallow
Chilean Swallow
Gray-breasted Martin
Brown-chested Martin
swallow sp.
Gnatcatchers
Masked Gnatcatcher
Wrens
House Wren
Starlings and Mynas
European Starling
Catbirds, Mockingbirds, and Thrashers
Chalk-browed Mockingbird
White-banded Mockingbird
Thrushes
Rufous-bellied Thrush
Creamy-bellied Thrush
Old World Sparrows
House Sparrow
Wagtails and Pipits
Yellowish Pipit
Short-billed Pipit
Correndera Pipit
Finches, Euphonias, and Allies
Hooded Siskin
New World Sparrows
Grassland Sparrow
Rufous-collared Sparrow
Blackbirds
White-browed Meadowlark
Variable Oriole
Screaming Cowbird
Shiny Cowbird
Scarlet-headed Blackbird
Grayish Baywing
Unicolored Blackbird
Yellow-winged Blackbird
Chestnut-capped Blackbird
Brown-and-yellow Marshbird
Wood-Warblers
Southern Yellowthroat
Tropical Parula
Cardinals, Grosbeaks, and Allies
Ultramarine Grosbeak
Tanagers and Allies
Red-crested Cardinal
Yellow-billed Cardinal
Ringed Warbling Finch
Black-capped Warbling Finch
Sayaca Tanager
Carbonated Sierra Finch
Long-tailed Reed Finch
Black-and-rufous Warbling Finch
Saffron Finch
Grassland Yellow-Finch
Great Pampa-Finch
White-bellied Seedeater
Double-collared Seedeater
Rusty-collared Seedeater
Red-crested Finch
Bluish-gray Saltator
Golden-billed Saltator