| 1 | Greater Rhea | Rhea americana | Near-threatened | 1 nr |
| 2 | Red-winged Tinamou | Rhynchotus rufescens | ||
| 3 | Spotted Nothura | Nothura maculosa | 3 | |
| 4 | Rockhopper Penguin | Eudyptes chrysocome | Vulnerable | |
| 5 | Magellanic Penguin | Spheniscus magellanicus | Near-threatened | |
| 6 | Least Grebe | Tachybaptus dominicus | ||
| 7 | Pied-billed Grebe | Podilymbus podiceps | 2 | |
| 8 | White-tufted Grebe | Rollandia rolland | ||
| 9 | Great Grebe | Podiceps major | 3 | |
| 10 | Wandering Albatross | Diomedea exulans | ||
| 11 | Royal Albatross | Diomedea epomophora | ||
| 12 | Black-browed Albatross | Thalassarche melanophris | ||
| 13 | Yellow-nosed Albatross | Thalassarche chlororhynchos | ||
| 14 | Antarctic Giant Petrel | Macronectes giganteus | Vulnerable | |
| 15 | Hall's Giant Petrel | Macronectes halli | Near-threatened | |
| 16 | Southern Fulmar | Fulmarus glacialoides | ||
| 17 | Cape Petrel | Daption capense | ||
| 18 | White-headed Petrel | Pterodroma lessonii | Rare/Accidental | |
| 19 | Atlantic Petrel | Pterodroma incerta | Rare/Accidental Vulnerable | |
| 20 | Soft-plumaged Petrel | Pterodroma mollis | Rare/Accidental | |
| 21 | Blue Petrel | Halobaena caerulea | ||
| 22 | Antarctic Prion | Pachyptila desolata | ||
| 23 | Slender-billed Prion | Pachyptila belcheri | ||
| 24 | Gray Petrel | Procellaria cinerea | Near-threatened | |
| 25 | White-chinned Petrel | Procellaria aequinoctialis | ||
| 26 | Kerguelen Petrel | Aphrodroma brevirostris | Rare/Accidental | |
| 27 | Cory's Shearwater | Calonectris diomedea | ||
| 28 | Greater Shearwater | Puffinus gravis | ||
| 29 | Sooty Shearwater | Puffinus griseus | ||
| 30 | Manx Shearwater | Puffinus puffinus | ||
| 31 | Little Shearwater | Puffinus assimilis | ||
| 32 | Wilson's Storm-Petrel | Oceanites oceanicus | ||
| 33 | White-faced Storm-Petrel | Pelagodroma marina | ||
| 34 | Black-bellied Storm-Petrel | Fregetta tropica | ||
| 35 | Common Diving-Petrel | Pelecanoides urinatrix | ||
| 36 | Brown Booby | Sula leucogaster | ||
| 37 | Neotropic Cormorant | Phalacrocorax brasilianus | 1 3 | |
| 38 | Rock Shag | Phalacrocorax magellanicus | ||
| 39 | Imperial Shag | Phalacrocorax atriceps | ||
| 40 | Anhinga | Anhinga anhinga | ||
| 41 | Magnificent Frigatebird | Fregata magnificens | ||
| 42 | Whistling Heron | Syrigma sibilatrix | 1 2 3 | |
| 43 | Cocoi Heron | Ardea cocoi | 2 3 | |
| 44 | Great Egret | Ardea alba | 1 2 3 | |
| 45 | Little Blue Heron | Egretta caerulea | ||
| 46 | Snowy Egret | Egretta thula | 1 2 3 | |
| 47 | Cattle Egret | Bubulcus ibis | ||
| 48 | Striated Heron | Butorides striata | ||
| 49 | Black-crowned Night-Heron | Nycticorax nycticorax | 2 | |
| 50 | Rufescent Tiger-Heron | Tigrisoma lineatum | 2 | |
| 51 | Stripe-backed Bittern | Ixobrychus involucris | ||
| 52 | Pinnated Bittern | Botaurus pinnatus | 2 | |
| 53 | Wood Stork | Mycteria americana | ||
| 54 | Maguari Stork | Ciconia maguari | 2 3 | |
| 55 | Jabiru | Jabiru mycteria | ||
| 56 | Plumbeous Ibis | Theristicus caerulescens | 1 2 3 | |
| 57 | Buff-necked Ibis | Theristicus caudatus | ||
| 58 | Bare-faced Ibis | Phimosus infuscatus | 2 3 | |
| 59 | White-faced Ibis | Plegadis chihi | 1 2 3 | |
| 60 | Puna Ibis | Plegadis ridgwayi | ||
| 61 | Roseate Spoonbill | Platalea ajaja | 2 | |
| 62 | Chilean Flamingo | Phoenicopterus chilensis | Near-threatened | 3 |
| 63 | Southern Screamer | Chauna torquata | 1 2 3 | |
| 64 | Fulvous Whistling-Duck | Dendrocygna bicolor | ||
| 65 | White-faced Whistling-Duck | Dendrocygna viduata | ||
| 66 | Black-bellied Whistling-Duck | Dendrocygna autumnalis | ||
| 67 | Black-necked Swan | Cygnus melanocorypha | 3 | |
| 68 | Coscoroba Swan | Coscoroba coscoroba | 3 | |
| 69 | Upland Goose | Chloephaga picta | ||
| 70 | Muscovy Duck | Cairina moschata | ||
| 71 | Comb Duck | Sarkidiornis melanotos | ||
| 72 | Ringed Teal | Callonetta leucophrys | ||
| 73 | Brazilian Teal | Amazonetta brasiliensis | 1 2 3 | |
| 74 | Chiloe Wigeon | Anas sibilatrix | ||
| 75 | Speckled Teal | Anas flavirostris | 1 2 3 | |
| 76 | Yellow-billed Pintail | Anas georgica | 1 nr 3 | |
| 77 | White-cheeked Pintail | Anas bahamensis | ||
| 78 | Silver Teal | Anas versicolor | 2 3 | |
| 79 | Blue-winged Teal | Anas discors | ||
| 80 | Cinnamon Teal | Anas cyanoptera | ||
| 81 | Red Shoveler | Anas platalea | ||
| 82 | Rosy-billed Pochard | Netta peposaca | ||
| 83 | Black-headed Duck | Heteronetta atricapilla | ||
| 84 | Masked Duck | Nomonyx dominica | ||
| 85 | Lake Duck | Oxyura vittata | 3 | |
| 86 | Black Vulture | Coragyps atratus | ||
| 87 | Turkey Vulture | Cathartes aura | 1 2 | |
| 88 | Lesser Yellow-headed Vulture | Cathartes burrovianus | 1 2 | |
| 89 | King Vulture | Sarcoramphus papa | ||
| 90 | Osprey | Pandion haliaetus | ||
| 91 | Swallow-tailed Kite | Elanoides forficatus | ||
| 92 | White-tailed Kite | Elanus leucurus | 2 | |
| 93 | Snail Kite | Rostrhamus sociabilis | 2 | |
| 94 | Long-winged Harrier | Circus buffoni | 1 2 | |
| 95 | Cinereous Harrier | Circus cinereus | 1 | |
| 96 | Rufous-thighed Hawk | Accipiter erythronemius | ||
| 97 | Bicolored Hawk | Accipiter bicolor | ||
| 98 | Crane Hawk | Geranospiza caerulescens | ||
| 99 | Great Black-Hawk | Buteogallus urubitinga | ||
| 100 | Savanna Hawk | Buteogallus meridionalis | ||
| 101 | Harris's Hawk | Parabuteo unicinctus | ||
| 102 | Black-collared Hawk | Busarellus nigricollis | ||
| 103 | Black-chested Buzzard-Eagle | Geranoaetus melanoleucus | ||
| 104 | Crowned Eagle | Harpyhaliaetus coronatus | Vulnerable | |
| 105 | Roadside Hawk | Buteo magnirostris | 1 2 3 | |
| 106 | Swainson's Hawk | Buteo swainsoni | ||
| 107 | White-tailed Hawk | Buteo albicaudatus | 2? | |
| 108 | Variable Hawk | Buteo polyosoma | ||
| 109 | Southern Caracara | Caracara plancus | 1 2 3 | |
| 110 | Yellow-headed Caracara | Milvago chimachima | 1 2 | |
| 111 | Chimango Caracara | Milvago chimango | 1 2 3 | |
| 112 | American Kestrel | Falco sparverius | 1 2 3 | |
| 113 | Aplomado Falcon | Falco femoralis | 2 | |
| 114 | Peregrine Falcon | Falco peregrinus | ||
| 115 | Dusky-legged Guan | Penelope obscura | ||
| 116 | Nocturnal Curassow | Nothocrax urumutum | ||
| 117 | Limpkin | Aramus guarauna | 2 3 | |
| 118 | Speckled Rail | Coturnicops notatus | ||
| 119 | Rufous-sided Crake | Laterallus melanophaius | ||
| 120 | Red-and-white Crake | Laterallus leucopyrrhus | ||
| 121 | Gray-necked Wood-Rail | Aramides cajanea | ||
| 122 | Giant Wood-Rail | Aramides ypecaha | 1 3 | |
| 123 | Dot-winged Crake | Porzana spiloptera | Vulnerable | |
| 124 | Yellow-breasted Crake | Porzana flaviventer | Rare/Accidental | |
| 125 | Spotted Rail | Pardirallus maculatus | ||
| 126 | Plumbeous Rail | Pardirallus sanguinolentus | ||
| 127 | Purple Gallinule | Porphyrio martinica | ||
| 128 | Common Moorhen | Gallinula chloropus | 1 3 | |
| 129 | Spot-flanked Gallinule | Gallinula melanops | 2 | |
| 130 | White-winged Coot | Fulica leucoptera | ||
| 131 | Red-gartered Coot | Fulica armillata | 3 | |
| 132 | Red-fronted Coot | Fulica rufifrons | ||
| 133 | Red-legged Seriema | Cariama cristata | ||
| 134 | Wattled Jacana | Jacana jacana | 1 2 | |
| 135 | American Painted-snipe | Rostratula semicollaris | ||
| 136 | Blackish Oystercatcher | Haematopus ater | ||
| 137 | American Oystercatcher | Haematopus palliatus | 1 3 | |
| 138 | White-backed Stilt | Himantopus melanurus | 1 2 3 | |
| 139 | Southern Lapwing | Vanellus chilensis | 1 2 3 | |
| 140 | American Golden-Plover | Pluvialis dominica | ||
| 141 | Black-bellied Plover | Pluvialis squatarola | ||
| 142 | Semipalmated Plover | Charadrius semipalmatus | 3 | |
| 143 | Collared Plover | Charadrius collaris | 1 3 | |
| 144 | Two-banded Plover | Charadrius falklandicus | 3 | |
| 145 | Rufous-chested Dotterel | Charadrius modestus | 3 | |
| 146 | Tawny-throated Dotterel | Oreopholus ruficollis | ||
| 147 | South American Snipe | Gallinago paraguaiae | 2 3 | |
| 148 | Giant Snipe | Gallinago undulata | ||
| 149 | Hudsonian Godwit | Limosa haemastica | ||
| 150 | Eskimo Curlew | Numenius borealis | Rare/Accidental Critically endangered (possibly extinct) | |
| 151 | Upland Sandpiper | Bartramia longicauda | ||
| 152 | Greater Yellowlegs | Tringa melanoleuca | 1 3 | |
| 153 | Lesser Yellowlegs | Tringa flavipes | 3? | |
| 154 | Solitary Sandpiper | Tringa solitaria | ||
| 155 | Spotted Sandpiper | Actitis macularia | ||
| 156 | Ruddy Turnstone | Arenaria interpres | ||
| 157 | Red Knot | Calidris canutus | ||
| 158 | Sanderling | Calidris alba | ||
| 159 | White-rumped Sandpiper | Calidris fuscicollis | ||
| 160 | Baird's Sandpiper | Calidris bairdii | ||
| 161 | Pectoral Sandpiper | Calidris melanotos | ||
| 162 | Stilt Sandpiper | Calidris himantopus | ||
| 163 | Buff-breasted Sandpiper | Tryngites subruficollis | Near-threatened | |
| 164 | Wilson's Phalarope | Phalaropus tricolor | ||
| 165 | Red Phalarope | Phalaropus fulicarius | ||
| 166 | Least Seedsnipe | Thinocorus rumicivorus | Rare/Accidental | |
| 167 | Snowy Sheathbill | Chionis alba | ||
| 168 | South Polar Skua | Stercorarius maccormicki | ||
| 169 | Pomarine Jaeger | Stercorarius pomarinus | ||
| 170 | Parasitic Jaeger | Stercorarius parasiticus | ||
| 171 | Belcher's Gull | Larus belcheri | ||
| 172 | Olrog's Gull | Larus atlanticus | Vulnerable | |
| 173 | Kelp Gull | Larus dominicanus | 1 3 | |
| 174 | Gray-headed Gull | Larus cirrocephalus | 1 3 | |
| 175 | Brown-hooded Gull | Larus maculipennis | 1 2 3 | |
| 176 | Gull-billed Tern | Sterna nilotica | ||
| 177 | Sandwich Tern | Sterna sandvicensis | ||
| 178 | Royal Tern | Sterna maxima | 2 3 | |
| 179 | South American Tern | Sterna hirundinacea | 3? | |
| 180 | Common Tern | Sterna hirundo | Rare/Accidental | |
| 181 | Arctic Tern | Sterna paradisaea | ||
| 182 | Antarctic Tern | Sterna vittata | ||
| 183 | Snowy-crowned Tern | Sterna trudeaui | 1 3 | |
| 184 | Least Tern | Sterna antillarum | Rare/Accidental | |
| 185 | Yellow-billed Tern | Sterna superciliaris | 1 3 | |
| 186 | Black Tern | Chlidonias niger | ||
| 187 | Large-billed Tern | Phaetusa simplex | ||
| 188 | Black Skimmer | Rynchops niger | 3 | |
| 189 | Picazuro Pigeon | Patagioenas picazuro | 1 2 3 | |
| 190 | Spot-winged Pigeon | Patagioenas maculosa | 1 3 | |
| 191 | Pale-vented Pigeon | Patagioenas cayennensis | ||
| 192 | Eared Dove | Zenaida auriculata | 1 2 | |
| 193 | Ruddy Ground-Dove | Columbina talpacoti | ||
| 194 | Picui Ground-Dove | Columbina picui | 2 3 | |
| 195 | White-tipped Dove | Leptotila verreauxi | 1 3 | |
| 196 | Gray-fronted Dove | Leptotila rufaxilla | ||
| 197 | Blue-crowned Parakeet | Aratinga acuticaudata | ||
| 198 | White-eyed Parakeet | Aratinga leucophthalmus | ||
| 199 | Burrowing Parrot | Cyanoliseus patagonus | ||
| 200 | Maroon-bellied Parakeet | Pyrrhura frontalis | ||
| 201 | Monk Parakeet | Myiopsitta monachus | nr 1 2 3 | |
| 202 | Red-spectacled Parrot | Amazona pretrei | Vulnerable | |
| 203 | Ash-colored Cuckoo | Coccyzus cinereus | ||
| 204 | Yellow-billed Cuckoo | Coccyzus americanus | ||
| 205 | Dark-billed Cuckoo | Coccyzus melacoryphus | ||
| 206 | Squirrel Cuckoo | Piaya cayana | ||
| 207 | Greater Ani | Crotophaga major | ||
| 208 | Smooth-billed Ani | Crotophaga ani | ||
| 209 | Guira Cuckoo | Guira guira | 1 2 3 | |
| 210 | Striped Cuckoo | Tapera naevia | ||
| 211 | Barn Owl | Tyto alba | ||
| 212 | Tropical Screech-Owl | Megascops choliba | ||
| 213 | Variable Screech-Owl | Megascops atricapillus | ||
| 214 | Long-tufted Screech-Owl | Megascops sanctaecatarinae | ||
| 215 | Great Horned Owl | Bubo virginianus | ||
| 216 | Ferruginous Pygmy-Owl | Glaucidium brasilianum | ||
| 217 | Burrowing Owl | Athene cunicularia | 2 | |
| 218 | Buff-fronted Owl | Aegolius harrisii | ||
| 219 | Striped Owl | Pseudoscops clamator | ||
| 220 | Short-eared Owl | Asio flammeus | ||
| 221 | Common Potoo | Nyctibius griseus | ||
| 222 | Common Nighthawk | Chordeiles minor | ||
| 223 | Nacunda Nighthawk | Podager nacunda | ||
| 224 | Band-winged Nightjar | Caprimulgus longirostris | ||
| 225 | Little Nightjar | Caprimulgus parvulus | ||
| 226 | Scissor-tailed Nightjar | Hydropsalis torquata | ||
| 227 | Sickle-winged Nightjar | Eleothreptus anomalus | Near-threatened | |
| 228 | White-collared Swift | Streptoprocne zonaris | Rare/Accidental | |
| 229 | Black Jacobin | Florisuga fuscus | ||
| 230 | Black-throated Mango | Anthracothorax nigricollis | ||
| 231 | Glittering-bellied Emerald | Chlorostilbon aureoventris | ||
| 232 | Violet-capped Woodnymph | Thalurania glaucopis | ||
| 233 | Gilded Sapphire | Hylocharis chrysura | 3? | |
| 233 | Rufous-throated Sapphire | Hylocharis | 3 | |
| 234 | White-throated Hummingbird | Leucochloris albicollis | 1 3 | |
| 235 | White-chested Emerald | Agyrtria brevirostris | ||
| 236 | Blue-tufted Starthroat | Heliomaster furcifer | ||
| 237 | Ringed Kingfisher | Ceryle torquata | 2 | |
| 238 | Amazon Kingfisher | Chloroceryle amazona | 3 | |
| 239 | Green Kingfisher | Chloroceryle americana | ||
| 240 | Mottled Piculet | Picumnus nebulosus | Near-threatened | |
| 241 | White Woodpecker | Melanerpes candidus | ||
| 242 | White-fronted Woodpecker | Melanerpes cactorum | ||
| 243 | Checkered Woodpecker | Picoides mixtus | ||
| 244 | White-spotted Woodpecker | Veniliornis spilogaster | 2 | |
| 245 | Green-barred Woodpecker | Colaptes melanochloros | 1 2 3 | |
| 246 | Campo Flicker | Colaptes campestris | 1 2 | |
| 247 | Crimson-crested Woodpecker | Campephilus melanoleucos | ||
| 248 | Cream-backed Woodpecker | Campephilus leucopogon | ||
| 249 | Common Miner | Geositta cunicularia | ||
| 250 | Scale-throated Earthcreeper | Upucerthia dumetaria | Rare/Accidental | |
| 251 | Bar-winged Cinclodes | Cinclodes fuscus | 3? | |
| 252 | Rufous Hornero | Furnarius rufus | 1 2 3 | |
| 253 | Tufted Tit-Spinetail | Leptasthenura platensis | ||
| 254 | Wren-like Rushbird | Phleocryptes melanops | 3h | |
| 255 | Curve-billed Reedhaunter | Limnornis curvirostris | ||
| 256 | Straight-billed Reedhaunter | Limnornis rectirostris | Near-threatened | |
| 257 | Bay-capped Wren-Spinetail | Spartonoica maluroides | Near-threatened | |
| 258 | Chotoy Spinetail | Schoeniophylax phryganophila | ||
| 259 | Sooty-fronted Spinetail | Synallaxis frontalis | ||
| 260 | Pale-breasted Spinetail | Synallaxis albescens | ||
| 261 | Chicli Spinetail | Synallaxis spixi | 1 3? | |
| 262 | Rufous-capped Spinetail | Synallaxis ruficapilla | ||
| 263 | Gray-bellied Spinetail | Synallaxis cinerascens | ||
| 264 | Stripe-crowned Spinetail | Cranioleuca pyrrhophia | 2 | |
| 265 | Sulphur-bearded Spinetail | Cranioleuca sulphurifera | ||
| 266 | Yellow-chinned Spinetail | Certhiaxis cinnamomea | ||
| 267 | Lesser Canastero | Asthenes pyrrholeuca | ||
| 268 | Short-billed Canastero | Asthenes baeri | ||
| 269 | Hudson's Canastero | Asthenes hudsoni | ||
| 270 | Little Thornbird | Phacellodomus sibilatrix | ||
| 271 | Greater Thornbird | Phacellodomus ruber | ||
| 272 | Freckle-breasted Thornbird | Phacellodomus striaticollis | 1 2h 3h | |
| 273 | Firewood-gatherer | Anumbius annumbi | 1 2 | |
| 274 | Lark-like Brushrunner | Coryphistera alaudina | ||
| 275 | Brown Cacholote | Pseudoseisura lophotes | ||
| 276 | Streaked Xenops | Xenops rutilans | ||
| 277 | Buff-browed Foliage-gleaner | Syndactyla rufosuperciliata | ||
| 278 | Sharp-tailed Streamcreeper | Lochmias nematura | ||
| 279 | Scimitar-billed Woodcreeper | Drymornis bridgesii | ||
| 280 | Narrow-billed Woodcreeper | Lepidocolaptes angustirostris | ||
| 281 | Great Antshrike | Taraba major | ||
| 282 | Variable Antshrike | Thamnophilus caerulescens | ||
| 283 | Rufous-capped Antshrike | Thamnophilus ruficapillus | 1 2 | |
| 284 | White-tipped Plantcutter | Phytotoma rutila | ||
| 285 | Southern Beardless-Tyrannulet | Camptostoma obsoletum | ||
| 286 | White-crested Elaenia | Elaenia albiceps | ||
| 287 | Small-billed Elaenia | Elaenia parvirostris | ||
| 288 | Sooty Tyrannulet | Serpophaga nigricans | 2 3 | |
| 289 | White-crested Tyrannulet | Serpophaga subcristata | 3 | |
| 290 | White-bellied Tyrannulet | Serpophaga munda | ||
| 291 | Mottle-cheeked Tyrannulet | Phylloscartes ventralis | ||
| 292 | Southern Scrub-Flycatcher | Sublegatus modestus | ||
| 293 | Chaco Suiriri | Suiriri suiriri | ||
| 294 | Many-colored Rush-Tyrant | Tachuris rubrigastra | ||
| 295 | Bearded Tachuri | Polystictus pectoralis | Near-threatened | |
| 296 | Warbling Doradito | Pseudocolopteryx flaviventris | ||
| 297 | Tawny-crowned Pygmy-Tyrant | Euscarthmus meloryphus | ||
| 298 | Yellow-olive Flycatcher | Tolmomyias sulphurescens | ||
| 299 | Bran-colored Flycatcher | Myiophobus fasciatus | ||
| 300 | Cliff Flycatcher | Hirundinea ferruginea | ||
| 301 | Euler's Flycatcher | Lathrotriccus euleri | ||
| 302 | Vermilion Flycatcher | Pyrocephalus rubinus | ||
| 303 | Gray Monjita | Xolmis cinerea | 3 | |
| 304 | Black-crowned Monjita | Xolmis coronata | ||
| 305 | White Monjita | Xolmis irupero | 1 2 3 | |
| 306 | Rusty-backed Monjita | Xolmis rubetra | Rare/Accidental | |
| 307 | Black-and-white Monjita | Heteroxolmis dominicana | Vulnerable | |
| 308 | Chocolate-vented Tyrant | Neoxolmis rufiventris | ||
| 309 | Gray-bellied Shrike-Tyrant | Agriornis microptera | ||
| 310 | Little Ground-Tyrant | Muscisaxicola fluviatilis | ||
| 311 | Dark-faced Ground-Tyrant | Muscisaxicola macloviana | 3 | |
| 312 | Austral Negrito | Lessonia rufa | 1 3 | |
| 313 | Blue-billed Black-Tyrant | Knipolegus cyanirostris | 2 | |
| 314 | Crested Black-Tyrant | Knipolegus lophotes | ||
| 315 | Spectacled Tyrant | Hymenops perspicillatus | 1? 2 3? | |
| 316 | White-headed Marsh-Tyrant | Arundinicola leucocephala | ||
| 317 | Strange-tailed Tyrant | Alectrurus risora | Vulnerable | |
| 318 | Yellow-browed Tyrant | Satrapa icterophrys | 2 | |
| 319 | Cattle Tyrant | Machetornis rixosus | 1 2 3 | |
| 320 | Swainson's Flycatcher | Myiarchus swainsoni | ||
| 321 | Short-crested Flycatcher | Myiarchus ferox | ||
| 322 | Brown-crested Flycatcher | Myiarchus tyrannulus | ||
| 323 | Great Kiskadee | Pitangus sulphuratus | 1 2 3 | |
| 324 | Streaked Flycatcher | Myiodynastes maculatus | ||
| 325 | Variegated Flycatcher | Empidonomus varius | ||
| 326 | Crowned Slaty Flycatcher | Griseotyrannus aurantioatrocristatus | ||
| 327 | Tropical Kingbird | Tyrannus melancholicus | ||
| 328 | Fork-tailed Flycatcher | Tyrannus savana | ||
| 329 | Green-backed Becard | Pachyramphus viridis | ||
| 330 | White-winged Becard | Pachyramphus polychopterus | ||
| 331 | Brown-chested Martin | Progne tapera | ||
| 332 | Gray-breasted Martin | Progne chalybea | ||
| 333 | Southern Martin | Progne elegans | ||
| 334 | White-rumped Swallow | Tachycineta leucorrhoa | 2 | |
| 335 | Chilean Swallow | Tachycineta meyeni | ||
| 336 | Blue-and-white Swallow | Pygochelidon cyanoleuca | 1 2 3 | |
| 337 | Tawny-headed Swallow | Stelgidopteryx fucata | ||
| 338 | Southern Rough-winged Swallow | Stelgidopteryx ruficollis | ||
| 339 | Bank Swallow | Riparia riparia | 2? | |
| 340 | Cliff Swallow | Petrochelidon pyrrhonota | ||
| 341 | Barn Swallow | Hirundo rustica | ||
| 342 | Correndera Pipit | Anthus correndera | ||
| 343 | Short-billed Pipit | Anthus furcatus | ||
| 344 | Hellmayr's Pipit | Anthus hellmayri | ||
| 345 | Yellowish Pipit | Anthus lutescens | ||
| 346 | House Wren | Troglodytes aedon | 1 2 3 | |
| 347 | Sedge Wren | Cistothorus platensis | ||
| 348 | Chalk-browed Mockingbird | Mimus saturninus | 1 2 | |
| 349 | White-banded Mockingbird | Mimus triurus | 3 | |
| 350 | Rufous-bellied Thrush | Turdus rufiventris | 1 2 3 | |
| 351 | Creamy-bellied Thrush | Turdus amaurochalinus | 1 2 3 | |
| 352 | White-necked Thrush | Turdus albicollis | ||
| 353 | Masked Gnatcatcher | Polioptila dumicola | 1 2 3 | |
| 354 | Plush-crested Jay | Cyanocorax chrysops | ||
| 355 | Red-eyed Vireo | Vireo olivaceus | ||
| 356 | Rufous-browed Peppershrike | Cyclarhis gujanensis | 2 | |
| 357 | Tropical Parula | Parula pitiayumi | 2 3 | |
| 358 | Blackpoll Warbler | Dendroica striata | ||
| 359 | Masked Yellowthroat | Geothlypis aequinoctialis | ||
| 360 | Golden-crowned Warbler | Basileuterus culicivorus | 2 | |
| 361 | White-rimmed Warbler | Basileuterus leucoblepharus | ||
| 362 | Hepatic Tanager | Piranga flava | ||
| 363 | Sayaca Tanager | Thraupis sayaca | ||
| 364 | Blue-and-yellow Tanager | Thraupis bonariensis | 1 | |
| 365 | Diademed Tanager | Stephanophorus diadematus | 1 2 | |
| 366 | Fawn-breasted Tanager | Pipraeidea melanonota | ||
| 367 | Purple-throated Euphonia | Euphonia chlorotica | ||
| 368 | Chestnut-backed Tanager | Tangara preciosa | ||
| 369 | Many-colored Chaco-Finch | Saltatricula multicolor | ||
| 370 | Red-crested Finch | Coryphospingus cucullatus | ||
| 371 | Long-tailed Reed-Finch | Donacospiza albifrons | 1 3 | |
| 372 | Common Diuca-Finch | Diuca diuca | ||
| 373 | Black-and-rufous Warbling-Finch | Poospiza nigrorufa | 1 2 3 | |
| 374 | Red-rumped Warbling-Finch | Poospiza lateralis | ||
| 375 | Black-capped Warbling-Finch | Poospiza melanoleuca | ||
| 376 | Rusty-collared Seedeater | Sporophila collaris | 2 | |
| 377 | Double-collared Seedeater | Sporophila caerulescens | 2? | |
| 378 | Tawny-bellied Seedeater | Sporophila hypoxantha | ||
| 379 | Dark-throated Seedeater | Sporophila ruficollis | Near-threatened | |
| 380 | Marsh Seedeater | Sporophila palustris | Endangered | |
| 381 | Chestnut Seedeater | Sporophila cinnamomea | Vulnerable | |
| 382 | Saffron Finch | Sicalis flaveola | 1 2 3 | |
| 383 | Grassland Yellow-Finch | Sicalis luteola | ||
| 384 | Great Pampa-Finch | Embernagra platensis | 1 3 | |
| 385 | Yellow Cardinal | Gubernatrix cristata | Endangered | |
| 386 | Red-crested Cardinal | Paroaria coronata | 2 | |
| 387 | Yellow-billed Cardinal | Paroaria capitata | ||
| 388 | Grassland Sparrow | Ammodramus humeralis | ||
| 389 | Rufous-collared Sparrow | Zonotrichia capensis | 1 2 3 | |
| 390 | Grayish Saltator | Saltator coerulescens | ||
| 391 | Green-winged Saltator | Saltator similis | ||
| 392 | Golden-billed Saltator | Saltator aurantiirostris | ||
| 393 | Ultramarine Grosbeak | Cyanocompsa brissonii | ||
| 394 | Glaucous-blue Grosbeak | Cyanoloxia glaucocaerulea | ||
| 395 | Bobolink | Dolichonyx oryzivorus | ||
| 396 | Saffron-cowled Blackbird | Agelaius flavus | Vulnerable | |
| 397 | Yellow-winged Blackbird | Agelaius thilius | 2 3 | |
| 398 | Chestnut-capped Blackbird | Agelaius ruficapillus | 2 | |
| 399 | Red-breasted Blackbird | Sturnella militaris | ||
| 400 | White-browed Blackbird | Sturnella superciliaris | ||
| 401 | Pampas Meadowlark | Sturnella defillippi | Vulnerable | |
| 402 | Bay-winged Cowbird | Molothrus badius | 2 3 | |
| 403 | Screaming Cowbird | Molothrus rufoaxillaris | 2 | |
| 404 | Shiny Cowbird | Molothrus bonariensis | 1 2 | |
| 405 | Epaulet Oriole | Icterus cayanensis | 1 | |
| 406 | Golden-winged Cacique | Cacicus chrysopterus | ||
| 407 | Solitary Cacique | Cacicus solitarius | ||
| 408 | Yellow-rumped Marshbird | Pseudoleistes guirahuro | ||
| 409 | Brown-and-yellow Marshbird | Pseudoleistes virescens | 1 3 | |
| 410 | Scarlet-headed Blackbird | Amblyramphus holosericeus | ||
| 411 | Chopi Blackbird | Gnorimopsar chopi | ||
| 412 | European Greenfinch | Carduelis chloris | Introduced species | |
| 413 | Hooded Siskin | Carduelis magellanica | 1 2 3 | |
| 414 | European Goldfinch | Carduelis carduelis | Introduced species | 2 3 |
| 415 | House Sparrow | Passer domesticus | Introduced species | 1 2 3 |