| Rheas: Rheidae |
| 1 | Greater Rhea | Rhea americana |
| Tinamous: Tinamidae |
| 2 | Elegant Crested-Tinamou | Eudromia elegans |
| 3 | Darwin's Nothura | Nothura darwinii |
| 4 | Spotted Nothura | Nothura maculosa |
| 5 | Brushland Tinamou | Nothoprocta cinerascens |
| 6 | Andean Tinamou | Nothoprocta pentlandii |
| 7 | Tataupa Tinamou | Crypturellus tataupa |
| Ducks: Anatidae |
| 8 | White-faced Whistling-Duck | Dendrocygna viduata |
| 9 | Yellow-billed Pintail | Anas georgica |
| 10 | Yellow-billed Teal | Anas flavirostris |
| Guans, Chachalacas, and Curassows: Cracidae |
| 11 | Chaco Chachalaca | Ortalis canicollis |
| Pigeons and Doves: Columbidae |
| 12 | Rock Pigeon | Columba livia |
| 13 | Picazuro Pigeon | Patagioenas picazuro |
| 14 | Spot-winged Pigeon | Patagioenas maculosa |
| 15 | Picui Ground Dove | Columbina picui |
| 16 | White-tipped Dove | Leptotila verreauxi |
| 17 | Eared Dove | Zenaida auriculata |
| Cuckoos: Cuculidae |
| 18 | Guira Cuckoo | Guira guira |
| 19 | Striped Cuckoo | Tapera naevia |
| 20 | Ash-colored Cuckoo | Coccycua cinerea |
| 21 | Dark-billed Cuckoo | Coccyzus melacoryphus |
| Nightjars and Allies: Caprimulgidae |
| 22 | Little Nightjar | Setopagis parvula |
| 23 | Band-winged Nightjar | Systellura longirostris |
| 24 | Scissor-tailed Nightjar | Hydropsalis torquata |
| Swifts: Apodidae |
| 25 | White-collared Swift | Streptoprocne zonaris |
| Hummingbirds: Trochilidae |
| 26 | Red-tailed Comet | Sappho sparganurus |
| 27 | Blue-tufted Starthroat | Heliomaster furcifer |
| 28 | Glittering-bellied Emerald | Chlorostilbon lucidus |
| Rails, Gallinules, and Coots: Rallidae |
| 29 | White-winged Coot | Fulica leucoptera |
| Stilts and Avocets: Recurvirostridae |
| 30 | Black-necked Stilt | Himantopus mexicanus |
| Plovers and Lapwings: Charadriidae |
| 31 | Tawny-throated Dotterel | Oreopholus ruficollis |
| 32 | Southern Lapwing | Vanellus chilensis |
| Sandpipers and Allies: Scolopacidae |
| 33 | Upland Sandpiper | Bartramia longicauda |
| 34 | Wilson's Phalarope | Phalaropus tricolor |
| 35 | Solitary Sandpiper | Tringa solitaria |
| 36 | Lesser Yellowlegs | Tringa flavipes |
| 37 | Baird's Sandpiper | Calidris bairdii |
| 38 | Pectoral Sandpiper | Calidris melanotos |
| Gulls, Terns, and Skimmers: Laridae |
| 39 | Gray-hooded Gull | Chroicocephalus cirrocephalus |
| Flamingos: Phoenicopteridae |
| 40 | Chilean Flamingo | Phoenicopterus chilensis |
| 41 | Andean Flamingo | Phoenicoparrus andinus |
| Grebes: Podicipedidae |
| 42 | Great Grebe | Podiceps major |
| Cormorants and Shags: Phalacrocoracidae |
| 43 | Neotropic Cormorant | Nannopterum brasilianus |
| Ibises and Spoonbills: Threskiornithidae |
| 44 | White-faced Ibis | Plegadis chihi |
| 45 | Bare-faced Ibis | Phimosus infuscatus |
| Herons, Egrets, and Bitterns: Ardeidae |
| 46 | Whistling Heron | Syrigma sibilatrix |
| 47 | Snowy Egret | Egretta thula |
| 48 | Western Cattle-Egret | Bubulcus ibis |
| 49 | Great Egret | Ardea alba |
| New World Vultures: Cathartidae |
| 50 | Andean Condor | Vultur gryphus |
| 51 | Black Vulture | Coragyps atratus |
| 52 | Turkey Vulture | Cathartes aura |
| 53 | Lesser Yellow-headed Vulture | Cathartes burrovianus |
| Hawks, Eagles, and Kites: Accipitridae |
| 54 | White-tailed Kite | Elanus leucurus |
| 55 | Sharp-shinned Hawk | Accipiter striatus |
| 56 | Cinereous Harrier | Circus cinereus |
| 57 | Savanna Hawk | Buteogallus meridionalis |
| 58 | Roadside Hawk | Rupornis magnirostris |
| 59 | Harris's Hawk | Parabuteo unicinctus |
| 60 | White-tailed Hawk | Geranoaetus albicaudatus |
| 61 | Variable Hawk | Geranoaetus polyosoma |
| 62 | Black-chested Buzzard-Eagle | Geranoaetus melanoleucus |
| 63 | Swainson's Hawk | Buteo swainsoni |
| Barn-Owls: Tytonidae |
| 64 | American Barn Owl | Tyto furcata |
| Owls: Strigidae |
| 65 | Tropical Screech-Owl | Megascops choliba |
| 66 | Great Horned Owl | Bubo virginianus |
| 67 | Ferruginous Pygmy-Owl | Glaucidium brasilianum |
| 68 | Burrowing Owl | Athene cunicularia |
| 69 | Chaco Owl | Strix chacoensis |
| 70 | Short-eared Owl | Asio flammeus |
| Kingfishers: Alcedinidae |
| 71 | Ringed Kingfisher | Megaceryle torquata |
| Puffbirds: Bucconidae |
| 72 | Spot-backed Puffbird | Nystalus maculatus |
| Woodpeckers: Picidae |
| 73 | White-barred Piculet | Picumnus cirratus |
| 74 | White Woodpecker | Melanerpes candidus |
| 75 | White-fronted Woodpecker | Melanerpes cactorum |
| 76 | Checkered Woodpecker | Veniliornis mixtus |
| 77 | Cream-backed Woodpecker | Campephilus leucopogon |
| 78 | Black-bodied Woodpecker | Dryocopus schulzii |
| 79 | Green-barred Woodpecker | Colaptes melanochloros |
| 80 | Campo Flicker | Colaptes campestris |
| Seriemas: Cariamidae |
| 81 | Black-legged Seriema | Chunga burmeisteri |
| Falcons and Caracaras: Falconidae |
| 82 | Spot-winged Falconet | Spiziapteryx circumcincta |
| 83 | Crested Caracara | Caracara cheriway |
| 84 | Chimango Caracara | Daptrius chimango |
| 85 | American Kestrel | Falco sparverius |
| 86 | Aplomado Falcon | Falco femoralis |
| 87 | Peregrine Falcon | Falco peregrinus |
| Parrots: Psittacidae |
| 88 | Monk Parakeet | Myiopsitta monachus |
| 89 | Blue-crowned Parakeet | Thectocercus acuticaudatus |
| Typical Antbirds: Thamnophilidae |
| 90 | Great Antshrike | Taraba major |
| 91 | Variable Antshrike | Thamnophilus caerulescens |
| Crescentchests: Melanopareiidae |
| 92 | Olive-crowned Crescentchest | Melanopareia maximiliani |
| Tapaculos: Rhinocryptidae |
| 93 | Crested Gallito | Rhinocrypta lanceolata |
| Ovenbirds and Woodcreepers: Furnariidae |
| 94 | Scimitarbilled Woodcreeper | Drymornis bridgesii |
| 95 | Narrow-billed Woodcreeper | Lepidocolaptes angustirostris |
| 96 | Chaco Earthcreeper | Tarphonomus certhioides |
| 97 | Rufous Hornero | Furnarius rufus |
| 98 | Crested Hornero | Furnarius cristatus |
| 99 | Scale-throated Earthcreeper | Upucerthia dumetaria |
| 100 | Buff-winged Cinclodes | Cinclodes fuscus |
| 101 | Brown-capped Tit-Spinetail | Leptasthenura fuliginiceps |
| 102 | Tufted Tit-Spinetail | Leptasthenura platensis |
| 103 | Plain-mantled Tit-Spinetail | Leptasthenura aegithaloides |
| 104 | Little Thornbird | Phacellodomus sibilatrix |
| 105 | Freckle-breasted Thornbird | Phacellodomus striaticollis |
| 106 | Firewood-gatherer | Anumbius annumbi |
| 107 | Lark-like Brushrunner | Coryphistera alaudina |
| 108 | Short-billed Canastero | Asthenes baeri |
| 109 | Cordilleran Canastero | Asthenes modesta |
| 110 | Sharp-billed Canastero | Asthenes pyrrholeuca |
| 111 | Stripe-crowned Spinetail | Cranioleuca pyrrhophia |
| 112 | Brown Cacholote | Pseudoseisura lophotes |
| 113 | Chotoy Spinetail | Schoeniophylax phryganophilus |
| 114 | Sooty-fronted Spinetail | Synallaxis frontalis |
| 115 | Pale-breasted Spinetail | Synallaxis albescens |
| Cotingas: Cotingidae |
| 116 | White-tipped Plantcutter | Phytotoma rutila |
| Tityras and Allies: Tityridae |
| 117 | White-naped Xenopsaris | Xenopsaris albinucha |
| Tyrant Flycatchers: Tyrannidae |
| 118 | Suiriri Flycatcher | Suiriri suiriri |
| 119 | Pearly-vented Tody-Tyrant | Hemitriccus margaritaceiventer |
| 120 | Southern Beardless-Tyrannulet | Camptostoma obsoletum |
| 121 | Yellow-billed Tit-Tyrant | Anairetes flavirostris |
| 122 | Tufted Tit-Tyrant | Anairetes parulus |
| 123 | Dinelli's Doradito | Pseudocolopteryx dinelliana |
| 124 | White-crested Elaenia | Elaenia albiceps |
| 125 | Small-billed Elaenia | Elaenia parvirostris |
| 126 | Sooty Tyrannulet | Serpophaga nigricans |
| 127 | White-crested Tyrannulet | Serpophaga subcristata |
| 128 | Straneck's Tyrannulet | Serpophaga griseicapilla |
| 129 | Fulvous-crowned Scrub-Tyrant | Euscarthmus meloryphus |
| 130 | Greater Wagtail-Tyrant | Stigmatura budytoides |
| 131 | Plain Tyrannulet | Inezia inornata |
| 132 | Bran-colored Flycatcher | Myiophobus fasciatus |
| 133 | Southern Scrub-Flycatcher | Sublegatus modestus |
| 134 | Vermilion Flycatcher | Pyrocephalus rubinus |
| 135 | Austral Negrito | Lessonia rufa |
| 136 | Cinereous Tyrant | Knipolegus striaticeps |
| 137 | White-winged Black-Tyrant | Knipolegus aterrimus |
| 138 | Hudson's Black-Tyrant | Knipolegus hudsoni |
| 139 | Spectacled Tyrant | Hymenops perspicillatus |
| 140 | White Monjita | Xolmis irupero |
| 141 | Black-crowned Monjita | Neoxolmis coronatus |
| 142 | Salinas Monjita | Neoxolmis salinarum |
| 143 | Gray-bellied Shrike-Tyrant | Agriornis micropterus |
| 144 | Lesser Shrike-Tyrant | Agriornis murinus |
| 145 | Swainson's Flycatcher | Myiarchus swainsoni |
| 146 | Brown-crested Flycatcher | Myiarchus tyrannulus |
| 147 | Cattle Tyrant | Machetornis rixosa |
| 148 | Great Kiskadee | Pitangus sulphuratus |
| 149 | Streaked Flycatcher | Myiodynastes maculatus |
| 150 | Crowned Slaty Flycatcher | Empidonomus aurantioatrocristatus |
| 151 | Tropical Kingbird | Tyrannus melancholicus |
| 152 | Fork-tailed Flycatcher | Tyrannus savana |
| Vireos, Shrike-Babblers, and Erpornis: Vireonidae |
| 153 | Rufous-browed Peppershrike | Cyclarhis gujanensis |
| 154 | Chivi Vireo | Vireo chiri |
| Swallows: Hirundinidae |
| 155 | Bank Swallow | Riparia riparia |
| 156 | White-rumped Swallow | Tachycineta leucorrhoa |
| 157 | Chilean Swallow | Tachycineta leucopyga |
| 158 | Southern Martin | Progne elegans |
| 159 | Brown-chested Martin | Progne tapera |
| 160 | Blue-and-white Swallow | Pygochelidon cyanoleuca |
| 161 | Tawny-headed Swallow | Alopochelidon fucata |
| Gnatcatchers: Polioptilidae |
| 162 | Masked Gnatcatcher | Polioptila dumicola |
| Wrens: Troglodytidae |
| 163 | Southern House Wren | Troglodytes musculus |
| Mockingbirds and Thrashers: Mimidae |
| 164 | Patagonian Mockingbird | Mimus patagonicus |
| 165 | Chalk-browed Mockingbird | Mimus saturninus |
| 166 | White-banded Mockingbird | Mimus triurus |
| Thrushes and Allies: Turdidae |
| 167 | Chiguanco Thrush | Turdus chiguanco |
| 168 | Creamy-bellied Thrush | Turdus amaurochalinus |
| 169 | Rufous-bellied Thrush | Turdus rufiventris |
| Old World Sparrows: Passeridae |
| 170 | House Sparrow | Passer domesticus |
| Wagtails and Pipits: Motacillidae |
| 171 | Yellowish Pipit | Anthus chii |
| 172 | Short-billed Pipit | Anthus furcatus |
| Finches, Euphonias, and Allies: Fringillidae |
| 173 | Purple-throated Euphonia | Euphonia chlorotica |
| 174 | Hooded Siskin | Spinus magellanicus |
| New World Sparrows: Passerellidae |
| 175 | Grassland Sparrow | Ammodramus humeralis |
| 176 | Rufous-collared Sparrow | Zonotrichia capensis |
| Troupials and Allies: Icteridae |
| 177 | White-browed Meadowlark | Leistes superciliaris |
| 178 | Long-tailed Meadowlark | Leistes loyca |
| 179 | Solitary Black Cacique | Cacicus solitarius |
| 180 | Variable Oriole | Icterus pyrrhopterus |
| 181 | Screaming Cowbird | Molothrus rufoaxillaris |
| 182 | Shiny Cowbird | Molothrus bonariensis |
| 183 | Grayish Baywing | Agelaioides badius |
| New World Warblers: Parulidae |
| 184 | Southern Yellowthroat | Geothlypis velata |
| 185 | Brown-capped Redstart | Myioborus brunniceps |
| Cardinals and Allies: Cardinalidae |
| 186 | Hepatic Tanager | Piranga flava |
| 187 | Ultramarine Grosbeak | Cyanoloxia brissonii |
| Tanagers and Allies: Thraupidae |
| 188 | Red-crested Cardinal | Paroaria coronata |
| 189 | Blue-and-yellow Tanager | Rauenia bonariensis |
| 190 | Sayaca Tanager | Thraupis sayaca |
| 191 | Black-crested Finch | Lophospingus pusillus |
| 192 | Carbonated Sierra Finch | Porphyrospiza carbonarius |
| 193 | Cinnamon Warbling Finch | Poospiza ornata |
| 194 | Black-and-chestnut Warbling Finch | Poospiza whitii |
| 195 | Ringed Warbling Finch | Poospiza torquata |
| 196 | Black-capped Warbling Finch | Poospiza melanoleuca |
| 197 | Saffron Finch | Sicalis flaveola |
| 198 | Grassland Yellow-Finch | Sicalis luteola |
| 199 | Great Pampa-Finch | Embernagra platensis |
| 200 | Blue-black Grassquit | Volatinia jacarina |
| 201 | Double-collared Seedeater | Sporophila caerulescens |
| 202 | Band-tailed Seedeater | Catamenia analis |
| 203 | Plain-colored Seedeater | Catamenia inornata |
| 204 | Red-crested Finch | Coryphospingus cucullatus |
| 205 | Many-colored Chaco Finch | Saltatricula multicolor |
| 206 | Golden-billed Saltator | Saltator aurantiirostris |
Special Birds