| 153 | Aguila Mora | Geranoaetus melanoleucus | Black-chested Buzzard-Eagle | Accipitridae | Falconiformes | SinFicha |
| 184 | Aguilucho Pampa | Busarellus nigricollis | Black-collared Hawk | Accipitridae | Falconiformes | SinFicha |
| 819 | Arañero Silbón | Basileuterus leucoblepharus | White-rimmed Warbler | Parulidae | Passeriformes | SinFicha |
| 464 | Arasarí Fajado | Pteroglossus castanotis | Chestnut-eared Aracari | Ramphastidae | Piciformes | SinFicha |
| 314 | Atí | Phaetusa simplex | Large-billed Tern | Sternidae | Charadriiformes | SinFicha |
| 284 | Becasina Común | Gallinago gallinago | Common Snipe | Scolopacidae | Charadriiformes | SinFicha |
| 691 | Benteveo Común | Pitangus sulphuratus | Great Kiskadee | Tyrannidae | Passeriformes | SinFicha |
| 956 | Boyerito | Icterus cayanensis | Epaulet Oriole | Icteridae | Passeriformes | SinFicha |
| 951 | Boyero Cacique | Cacicus haemorrhous | Red-rumped Cacique | Icteridae | Passeriformes | SinFicha |
| 925 | Brasita de Fuego | Coryphospingus cucullatus | Red-crested Finch | Emberizidae | Passeriformes | SinFicha |
| 703 | Burlisto Cola Castaña | Myiarchus tyrannulus | Brown-crested Flycatcher | Tyrannidae | Passeriformes | SinFicha |
| 944 | Cabecitanegra Común | Carduelis magellanica | Hooded Siskin | Fringillidae | Passeriformes | SinFicha |
| 938 | Cachilo Canela | Donacospiza albifrons | Long-tailed Reed-Finch | Emberizidae | Passeriformes | SinFicha |
| 928 | Cachilo Ceja Amarilla | Ammodramus humeralis | Grassland Sparrow | Emberizidae | Passeriformes | SinFicha |
| 793 | Cachirla Chica | Anthus chii | Yellowish Pipit | Motacillidae | Passeriformes | SinFicha |
| 162 | Caracolero Común | Rosthramus sociabilis | Snail Kite | Accipitridae | Falconiformes | SinFicha |
| 197 | Carancho | Caracara plancus | Southern Caracara | Falconidae | Falconiformes | Fichado |
| 217 | Carau | Aramus guarauna | Limpkin | Aramidae | Gruiformes | SinFicha |
| 866 | Cardenal Común | Paroaria coronata | Red-crested Cardinal | Emberizidae | Passeriformes | SinFicha |
| 471 | Carpintero Campestre | Colaptes campestris | Campo Flicker | Picidae | Piciformes | SinFicha |
| 474 | Carpintero Real Común | Colaptes melanolaimus | Golden-breasted Woodpecker | Picidae | Piciformes | SinFicha |
| 121 | Cauquén Real | Chloephaga poliocephala | Ashy-headed Goose | Anatidae | Anseriformes | SinFicha |
| 849 | Celestino Común | Thraupis sayaca | Sayaca Tanager | Thraupidae | Passeriformes | SinFicha |
| 109 | Chajá | Chauna torquata | Southern Screamer | Anhimidae | Anseriformes | SinFicha |
| 83 | Chiflón | Syrigma sibilatrix | Whistling Heron | Ardeidae | Ciconiiformes | SinFicha |
| 198 | Chimango | Milvago chimango | Chimango Caracara | Falconidae | Falconiformes | SinFicha |
| 506 | Chinchero Chico | Lepidocolaptes angustirostris | Narrow-billed Woodcreeper | Dendrocolaptidae | Passeriformes | SinFicha |
| 927 | Chingolo | Zonotrichia capensis | Rufous-collared Sparrow | Emberizidae | Passeriformes | SinFicha |
| 10 | Choique | Pterocnemia pennata | Short Rhea | Rheidae | Struthioniformes | SinFicha |
| 734 | Churrinche | Pyrocephalus rubinus | Vermilion Flycatcher | Tyrannidae | Passeriformes | SinFicha |
| 96 | Cigüeña Americana | Ciconia maguari | Maguari Stork | Ciconidae | Ciconiiformes | SinFicha |
| 571 | Coludito Copetón | Leptasthenura platensis | Tufted Tit-Spinetail | Furnaridae | Passeriformes | SinFicha |
| 940 | Coludo Grande | Emberizoides herbicola | Wedge-tailed Grass-Finch | Emberizidae | Passeriformes | SinFicha |
| 884 | Corbatita Común | Sporophila caerulescens | Double-collared Seedeater | Emberizidae | Passeriformes | SinFicha |
| 356 | Cotorra | Myiopsitta monachus | Monk Parakeet | Psittacidae | Psittaciformes | SinFicha |
| 535 | Crestudo | Coryphistera alaudina | Lark-like Brushrunner | Furnaridae | Passeriformes | SinFicha |
| 102 | Cuervillo Cara Pelada | Phimosus infuscatus | Bare-faced Ibis | Threskiornithidae | Ciconiiformes | SinFicha |
| 104 | Cuervillo de Cañada | Plegadis chihi | White-faced Ibis | Threskiornithidae | Ciconiiformes | SinFicha |
| 547 | Curutié Blanco | Cranioleuca pyrrhophia | Stripe-crowned Spinetail | Furnaridae | Passeriformes | SinFicha |
| 106 | Flamenco Austral | Phoenicopterus chilensis | Chilean Flamingo | Phoenicopteridae | Phoenicopteriformes | SinFicha |
| 847 | Frutero Negro | Tachyphonus rufus | White-lined Tanager | Thraupidae | Passeriformes | SinFicha |
| 224 | Gallineta Overa | Pardirallus maculatus | Spotted Rail | Rallidae | Gruiformes | SinFicha |
| 88 | Garcita Blanca | Egretta thula | Snowy Egret | Ardeidae | Ciconiiformes | SinFicha |
| 93 | Garza Bruja | Nycticorax nycticorax | Black-crowned Night-Heron | Ardeidae | Ciconiiformes | SinFicha |
| 80 | Garza Mora | Ardea cocoi | Cocoi Heron | Ardeidae | Ciconiiformes | SinFicha |
| 166 | Gavilán Ceniciento | Circus cinereus | Cinereous Harrier | Accipitridae | Falconiformes | SinFicha |
| 161 | Gavilán Mixto | Parabuteo unicinctus | Harris's Hawk | Accipitridae | Falconiformes | SinFicha |
| 303 | Gaviota Cangrejera | Larus atlanticus | Olrog's Gull | Laridae | Charadriiformes | SinFicha |
| 306 | Gaviota Capucho Café | Larus maculipennis | Brown-hooded Gull | Laridae | Charadriiformes | SinFicha |
| 302 | Gaviota Cocinera | Larus dominicanus | Kelp Gull | Laridae | Charadriiformes | SinFicha |
| 774 | Golondrina Ceja Blanca | Tachycineta leucorrhoa | White-rumped Swallow | Hirundinidae | Passeriformes | SinFicha |
| 773 | Golondrina Parda | Phaeoprogne tapera | Brown-chested Martin | Hirundinidae | Passeriformes | SinFicha |
| 205 | Halcón Plomizo | Falco femoralis | Aplomado Falcon | Falconidae | Falconiformes | SinFicha |
| 208 | Halconcito Colorado | Falco sparverius | American Kestrel | Falconidae | Falconiformes | SinFicha |
| 81 | Hocó Colorado | Tigrisoma lineatum | Rufescent Tiger-Heron | Ardeidae | Ciconiiformes | SinFicha |
| 82 | Hocó Oscuro | Tigrisoma fasciatum | Fasciated Tiger-Heron | Ardeidae | Ciconiiformes | SinFicha |
| 533 | Hornero | Furnarius rufus | Rufous Hornero | Furnaridae | Passeriformes | SinFicha |
| 20 | Inambú Común | Nothura maculosa | Spotted Nothura | Tinamidae | Tinamiformes | SinFicha |
| 218 | Ipacaá | Aramides ypecaha | Giant Wood-Rail | Rallidae | Gruiformes | SinFicha |
| 246 | Jacana | Jacana jacana | Wattled Jacana | Jacanidae | Charadriiformes | SinFicha |
| 903 | Jilguero Dorado | Sicalis flaveola | Saffron Finch | Emberizidae | Passeriformes | SinFicha |
| 150 | Jote Cabeza Amarilla | Cathartes burrovianus | Lesser Yellow-headed Vulture | Cathartidae | Falconiformes | SinFicha |
| 149 | Jote Cabeza Colorada | Cathartes aura | Turkey Vulture | Cathartidae | Falconiformes | SinFicha |
| 685 | Lavandera | Fluvicola leucocephala | White-headed Marsh-Tyrant | Tyrannidae | Passeriformes | SinFicha |
| 536 | Leñatero | Anumbius annumbi | Firewood-gatherer | Furnaridae | Passeriformes | SinFicha |
| 388 | Lechucita Vizcachera | Athene cunicularia | Burrowing Owl | Strigidae | Strigiformes | Fichado |
| 458 | Martín Pescador Chico | Chloroceryle americana | Green Kingfisher | Alcedinidae | Coraciiformes | SinFicha |
| 827 | Mielero | Coereba flaveola | Bananaquit | Coerebidae | Passeriformes | SinFicha |
| 654 | Monjita Blanca | Xolmis irupero | White Monjita | Tyrannidae | Passeriformes | SinFicha |
| 651 | Monjita Dominica/Overa | Heteroxolmis dominicana | Black-and-white Monjita | Tyrannidae | Passeriformes | SinFicha |
| 652 | Monjita Gris | Xolmis cinerea | Gray Monjita | Tyrannidae | Passeriformes | SinFicha |
| 937 | Monterita Cabeza Negra | Poospiza melanoleuca | Black-capped Warbling-Finch | Emberizidae | Passeriformes | SinFicha |
| 326 | Paloma Manchada | Columba maculosa | Spot-winged Pigeon | Columbidae | Columbiformes | SinFicha |
| 127 | Pato Barcino | Anas flavirostris | Speckled Teal | Anatidae | Anseriformes | SinFicha |
| 966 | Pecho Amarillo Grande | Pseudoleistes guirahuro | Yellow-rumped Marshbird | Icteridae | Passeriformes | SinFicha |
| 971 | Pecho Colorado | Sturnella superciliaris | White-browed Blackbird | Icteridae | Passeriformes | SinFicha |
| 862 | Pepitero Verdoso | Saltator similis | Green-winged Saltator | Emberizidae | Passeriformes | SinFicha |
| 687 | Picabuey | Machetornis rixosus | Cattle Tyrant | Tyrannidae | Passeriformes | SinFicha |
| 445 | Picaflor Bronceado | Hylocharis chrysura | Gilded Sapphire | Trochilidae | Trochiliformes | SinFicha |
| 444 | Picaflor Común | Chlorostilbon aureoventris | Glittering-bellied Emerald | Trochilidae | Trochiliformes | SinFicha |
| 439 | Picaflor Corona Violácea | Thalurania glaucopis | Violet-capped Woodnymph | Trochilidae | Trochiliformes | SinFicha |
| 448 | Picaflor Esmeralda | Amazilia versicolor | Versicolored Emerald | Trochilidae | Trochiliformes | SinFicha |
| 435 | Picaflor Negro | Melanotrochilus fuscus | Black Jacobin | Trochilidae | Trochiliformes | SinFicha |
| 669 | Pico de Plata | Hymenops perspicillatus | Spectacled Tyrant | Tyrannidae | Passeriformes | SinFicha |
| 562 | Pijuí Frente Gris | Synallaxis frontalis | Sooty-fronted Spinetail | Furnaridae | Passeriformes | SinFicha |
| 8 | Pingüino Patagónico | Spheniscus magellanicus | Magellanic Penguin | Spheniscidae | Sphenisciformes | SinFicha |
| 377 | Pirincho | Guira guira | Guira Cuckoo | Cuculidae | Cuculiformes | SinFicha |
| 240 | Pollona Azul/*Sultana | Porphyrula martinica | Purple Gallinule | Rallidae | Gruiformes | SinFicha |
| 239 | Pollona Negra | Gallinula chloropus | Common Moorhen | Rallidae | Gruiformes | SinFicha |
| 789 | Ratona Común | Troglodytes aedon | House Wren | Troglodytidae | Passeriformes | SinFicha |
| 830 | Saí Azul | Dacnis cayana | Blue Dacnis | Coerebidae | Passeriformes | SinFicha |
| 115 | Sirirí Pampa | Dendrocygna viduata | White-faced Whistling-Duck | Anatidae | Anseriformes | SinFicha |
| 713 | Suirirí Común | Suiriri suiriri | Suiriri Flycatcher | Tyrannidae | Passeriformes | SinFicha |
| 454 | Surucuá Común | Trogon surrucura | Surucua Trogon | Trogonidae | trogoniformes | SinFicha |
| 686 | Tachurí Sietecolores | Tachuris rubrigastra | Many-colored Rush-Tyrant | Tyrannidae | Passeriformes | SinFicha |
| 813 | Tacuarita Azul | Polioptila dumicola | Masked Gnatcatcher | Polioptilidae | Passeriformes | SinFicha |
| 174 | Taguató común | Buteo magnirostris | Roadside Hawk | Accipitridae | Falconiformes | SinFicha |
| 253 | Tero Común | Vanellus chilensis | Southern Lapwing | Chararidriidae | Charadriiformes | SinFicha |
| 252 | Tero real | Himantopus melanurus | White-backed Stilt | Recurvirostridae | Charadriiformes | SinFicha |
| 696 | Tijereta | Tyrannus savana | Fork-tailed Flycatcher | Tyrannidae | Passeriformes | SinFicha |
| 965 | Tordo Amarillo | Xanthopsar flavus | Saffron-cowled Blackbird | Icteridae | Passeriformes | SinFicha |
| 959 | Tordo Músico | Molothrus badius | Bay-winged Cowbird | Icteridae | Passeriformes | SinFicha |
| 958 | Tordo Renegrido | Molothrus bonariensis | Shiny Cowbird | Icteridae | Passeriformes | SinFicha |
| 465 | Tucán Pico Verde | Rhamphastos dicolorus | Keel-billed Toucan | Ramphastidae | Piciformes | SinFicha |
| 941 | Verdón | Embernagra platensis | Great Pampa-Finch | Emberizidae | Passeriformes | SinFicha |
| 97 | Yabirú | Jabiru mycteria | Jabiru | Ciconidae | Ciconiiformes | SinFicha |
| 625 | Yacutoro | Pyroderus scutatus | Red-ruffed Fruitcrow | Cotingidae | Passeriformes | SinFicha |
| 805 | Zorzal Colorado | Turdus rufiventris | Rufous-bellied Thrush | Turdidae | Passeriformes | SinFicha |