Birds of Uruguay

Birding in Uruguay

Uruguay is the tranquil buffer between South America’s superpowers. This territory won independence in 1828, after centuries of back-and-forth occupation by Spanish and Portuguese interests. 

Although some influences of Argentina and Brazil are still evident—tango, Carnival, gaucho heritage—Uruguay’s culture has been mellowed by sun, sky and sea.

The Birds

There are approximately 448 avifauna species in Uruguay. Seven of the species have been introduced while 39 species are vagrants or rare species. Six birds’ species are believed to be extinct because they cannot be traced anywhere in the country or world. 

None of the bird species are endemic while 20 species are hypothetical (believed to exist in the country). Most of the birds’ species in Uruguay are native to South America are geographically distributed across the continent. This article explores some of the native birds of Uruguay, their characteristics, and possible threats and conservation.

The Full List of Birds in Uruguay

RHEIFORMES: Rheidae 
Greater RheaRhea americana
  
TINAMIFORMES: Tinamidae 
Brown TinamouCrypturellus obsoletus
Red-winged TinamouRhynchotus rufescens
Spotted NothuraNothura maculosa
  
ANSERIFORMES: Anhimidae 
Horned ScreamerAnhima cornuta
Southern ScreamerChauna torquata
  
ANSERIFORMES: Anatidae 
White-faced Whistling-DuckDendrocygna viduata
Black-bellied Whistling-DuckDendrocygna autumnalis
Fulvous Whistling-DuckDendrocygna bicolor
Black-necked SwanCygnus melancoryphus
Coscoroba SwanCoscoroba coscoroba
Comb DuckSarkidiornis sylvicola
Muscovy DuckCairina moschata
Ringed TealCallonetta leucophrys
Brazilian TealAmazonetta brasiliensis
Silver TealSpatula versicolor
Blue-winged TealSpatula discors
Cinnamon TealSpatula cyanoptera
Red ShovelerSpatula platalea
Chiloe WigeonMareca sibilatrix
MallardAnas platyrhynchos
White-cheeked PintailAnas bahamensis
Yellow-billed PintailAnas georgica
Yellow-billed TealAnas flavirostris
Rosy-billed PochardNetta peposaca
Black-headed DuckHeteronetta atricapilla
Masked DuckNomonyx dominicus
Lake DuckOxyura vittata
  
GALLIFORMES: Cracidae 
Dusky-legged GuanPenelope obscura
  
GALLIFORMES: Odontophoridae 
Spot-winged Wood-QuailOdontophorus capueira
  
PHOENICOPTERIFORMES: Phoenicopteridae 
Chilean FlamingoPhoenicopterus chilensis
Andean FlamingoPhoenicoparrus andinus
  
PODICIPEDIFORMES: Podicipedidae 
White-tufted GrebeRollandia rolland
Least GrebeTachybaptus dominicus
Pied-billed GrebePodilymbus podiceps
Great GrebePodiceps major
  
COLUMBIFORMES: Columbidae 
Rock PigeonColumba livia
Pale-vented PigeonPatagioenas cayennensis
Picazuro PigeonPatagioenas picazuro
Spot-winged PigeonPatagioenas maculosa
Ruddy Ground DoveColumbina talpacoti
Picui Ground DoveColumbina picui
Ruddy Quail-DoveGeotrygon montana
White-tipped DoveLeptotila verreauxi
Gray-fronted DoveLeptotila rufaxilla
Eared DoveZenaida auriculata
  
CUCULIFORMES: Cuculidae 
Guira CuckooGuira guira
Greater AniCrotophaga major
Smooth-billed AniCrotophaga ani
Striped CuckooTapera naevia
Ash-colored CuckooCoccycua cinerea
Squirrel CuckooPiaya cayana
Dark-billed CuckooCoccyzus melacoryphus
Yellow-billed CuckooCoccyzus americanus
  
CAPRIMULGIFORMES: Caprimulgidae 
Nacunda NighthawkChordeiles nacunda
Common NighthawkChordeiles minor
Band-winged NightjarSystellura longirostris
Common PauraqueNyctidromus albicollis
Little NightjarSetopagis parvula
Scissor-tailed NightjarHydropsalis torquata
  
CAPRIMULGIFORMES: Nyctibiidae 
Common PotooNyctibius griseus
  
CAPRIMULGIFORMES: Apodidae 
White-collared SwiftStreptoprocne zonaris
Vaux’s SwiftChaetura vauxi
Sick’s SwiftChaetura meridionalis
  
CAPRIMULGIFORMES: Trochilidae 
Black JacobinFlorisuga fusca
Black-throated MangoAnthracothorax nigricollis
Blue-tufted StarthroatHeliomaster furcifer
Glittering-bellied EmeraldChlorostilbon lucidus
Violet-capped WoodnymphThalurania glaucopis
White-throated HummingbirdLeucochloris albicollis
Gilded HummingbirdHylocharis chrysura
  
GRUIFORMES: Rallidae 
Ash-throated CrakeMustelirallus albicollis
Spotted RailPardirallus maculatus
Plumbeous RailPardirallus sanguinolentus
Giant Wood-RailAramides ypecaha
Gray-cowled Wood-RailAramides cajaneus
Spot-flanked GallinulePorphyriops melanops
Dot-winged CrakePorzana spiloptera
Common GallinuleGallinula galeata
Red-fronted CootFulica rufifrons
Red-gartered CootFulica armillata
White-winged CootFulica leucoptera
Purple GallinulePorphyrio martinica
Azure GallinulePorphyrio flavirostris
Speckled RailCoturnicops notatus
Yellow-breasted CrakeHapalocrex flaviventer
Rufous-sided CrakeLaterallus melanophaius
Red-and-white CrakeLaterallus leucopyrrhus
  
GRUIFORMES: Aramidae 
LimpkinAramus guarauna
  
CHARADRIIFORMES: Chionidae 
Snowy SheathbillChionis albus
  
CHARADRIIFORMES: Recurvirostridae 
Black-necked StiltHimantopus mexicanus
  
CHARADRIIFORMES: Haematopodidae 
American OystercatcherHaematopus palliatus
Blackish OystercatcherHaematopus ater
  
CHARADRIIFORMES: Charadriidae 
Black-bellied PloverPluvialis squatarola
American Golden-PloverPluvialis dominica
Tawny-throated DotterelOreopholus ruficollis
Southern LapwingVanellus chilensis
Collared PloverCharadrius collaris
Two-banded PloverCharadrius falklandicus
Semipalmated PloverCharadrius semipalmatus
Rufous-chested DotterelCharadrius modestus
  
CHARADRIIFORMES: Thinocoridae 
Least SeedsnipeThinocorus rumicivorus
  
CHARADRIIFORMES: Rostratulidae 
South American Painted-SnipeNycticryphes semicollaris
  
CHARADRIIFORMES: Jacanidae 
Wattled JacanaJacana jacana
  
CHARADRIIFORMES: Scolopacidae 
Upland SandpiperBartramia longicauda
WhimbrelNumenius phaeopus
Eskimo CurlewNumenius borealis
Hudsonian GodwitLimosa haemastica
Ruddy TurnstoneArenaria interpres
Red KnotCalidris canutus
Stilt SandpiperCalidris himantopus
SanderlingCalidris alba
Baird’s SandpiperCalidris bairdii
White-rumped SandpiperCalidris fuscicollis
Buff-breasted SandpiperCalidris subruficollis
Pectoral SandpiperCalidris melanotos
Semipalmated SandpiperCalidris pusilla
Western SandpiperCalidris mauri
South American SnipeGallinago paraguaiae
Wilson’s PhalaropePhalaropus tricolor
Spotted SandpiperActitis macularius
Solitary SandpiperTringa solitaria
Greater YellowlegsTringa melanoleuca
WilletTringa semipalmata
Lesser YellowlegsTringa flavipes
  
CHARADRIIFORMES: Stercorariidae 
Chilean SkuaStercorarius chilensis
South Polar SkuaStercorarius maccormicki
Brown SkuaStercorarius antarcticus
Pomarine JaegerStercorarius pomarinus
Parasitic JaegerStercorarius parasiticus
Long-tailed JaegerStercorarius longicaudus
  
CHARADRIIFORMES: Laridae 
Brown-hooded GullChroicocephalus maculipennis
Gray-hooded GullChroicocephalus cirrocephalus
Franklin’s GullLeucophaeus pipixcan
Olrog’s GullLarus atlanticus
Kelp GullLarus dominicanus
Brown NoddyAnous stolidus
Least TernSternula antillarum
Yellow-billed TernSternula superciliaris
Large-billed TernPhaetusa simplex
Gull-billed TernGelochelidon nilotica
Black TernChlidonias niger
Common TernSterna hirundo
Arctic TernSterna paradisaea
South American TernSterna hirundinacea
Antarctic TernSterna vittata
Snowy-crowned TernSterna trudeaui
Royal TernThalasseus maximus
Sandwich TernThalasseus sandvicensis
Elegant TernThalasseus elegans
Black SkimmerRynchops niger
  
SPHENISCIFORMES: Spheniscidae 
King PenguinAptenodytes patagonicus
Magellanic PenguinSpheniscus magellanicus
Southern Rockhopper PenguinEudyptes chrysocome
  
PROCELLARIIFORMES: Diomedeidae 
Yellow-nosed AlbatrossThalassarche chlororhynchos
White-capped AlbatrossThalassarche cauta
Black-browed AlbatrossThalassarche melanophris
Sooty AlbatrossPhoebetria fusca
Royal AlbatrossDiomedea epomophora
Wandering AlbatrossDiomedea exulans
  
PROCELLARIIFORMES: Oceanitidae 
Wilson’s Storm-PetrelOceanites oceanicus
Gray-backed Storm-PetrelGarrodia nereis
White-bellied Storm-PetrelFregetta grallaria
Black-bellied Storm-PetrelFregetta tropica
  
PROCELLARIIFORMES: Hydrobatidae 
Leach’s Storm-PetrelOceanodroma leucorhoa
  
PROCELLARIIFORMES: Procellariidae 
Southern Giant-PetrelMacronectes giganteus
Northern Giant-PetrelMacronectes halli
Southern FulmarFulmarus glacialoides
Cape PetrelDaption capense
Kerguelen PetrelAphrodroma brevirostris
Great-winged PetrelPterodroma macroptera
Trindade PetrelPterodroma arminjoniana
Soft-plumaged PetrelPterodroma mollis
Atlantic PetrelPterodroma incerta
Blue PetrelHalobaena caerulea
Antarctic PrionPachyptila desolata
Slender-billed PrionPachyptila belcheri
Gray PetrelProcellaria cinerea
White-chinned PetrelProcellaria aequinoctialis
Spectacled PetrelProcellaria conspicillata
Cory’s ShearwaterCalonectris diomedea
Cape Verde ShearwaterCalonectris edwardsii
Great ShearwaterArdenna gravis
Sooty ShearwaterArdenna grisea
Manx ShearwaterPuffinus puffinus
Common Diving-PetrelPelecanoides urinatrix
  
CICONIIFORMES: Ciconiidae 
Maguari StorkCiconia maguari
JabiruJabiru mycteria
Wood StorkMycteria americana
  
SULIFORMES: Fregatidae 
Magnificent FrigatebirdFregata magnificens
  
SULIFORMES: Sulidae 
Masked BoobySula dactylatra
Brown BoobySula leucogaster
Cape GannetMorus capensis
  
SULIFORMES: Anhingidae 
AnhingaAnhinga anhinga
  
SULIFORMES: Phalacrocoracidae 
Neotropic CormorantPhalacrocorax brasilianus
Imperial CormorantPhalacrocorax atriceps
  
PELECANIFORMES: Ardeidae 
Pinnated BitternBotaurus pinnatus
Stripe-backed BitternIxobrychus involucris
Rufescent Tiger-HeronTigrisoma lineatum
Cocoi HeronArdea cocoi
Great EgretArdea alba
Snowy EgretEgretta thula
Little Blue HeronEgretta caerulea
Cattle EgretBubulcus ibis
Striated HeronButorides striata
Whistling HeronSyrigma sibilatrix
Black-crowned Night-HeronNycticorax nycticorax
  
PELECANIFORMES: Threskiornithidae 
White-faced IbisPlegadis chihi
Bare-faced IbisPhimosus infuscatus
Plumbeous IbisTheristicus caerulescens
Buff-necked IbisTheristicus caudatus
Roseate SpoonbillPlatalea ajaja
  
CATHARTIFORMES: Cathartidae 
Black VultureCoragyps atratus
Turkey VultureCathartes aura
Lesser Yellow-headed VultureCathartes burrovianus
  
ACCIPITRIFORMES: Pandionidae 
OspreyPandion haliaetus
  
ACCIPITRIFORMES: Accipitridae 
White-tailed KiteElanus leucurus
Swallow-tailed KiteElanoides forficatus
Black Hawk-EagleSpizaetus tyrannus
Black-collared HawkBusarellus nigricollis
Snail KiteRostrhamus sociabilis
Mississippi KiteIctinia mississippiensis
Plumbeous KiteIctinia plumbea
Long-winged HarrierCircus buffoni
Cinereous HarrierCircus cinereus
Sharp-shinned HawkAccipiter striatus
Bicolored HawkAccipiter bicolor
Crane HawkGeranospiza caerulescens
Savanna HawkButeogallus meridionalis
Great Black HawkButeogallus urubitinga
Chaco EagleButeogallus coronatus
Roadside HawkRupornis magnirostris
Harris’s HawkParabuteo unicinctus
White-tailed HawkGeranoaetus albicaudatus
Variable HawkGeranoaetus polyosoma
Black-chested Buzzard-EagleGeranoaetus melanoleucus
Short-tailed HawkButeo brachyurus
Swainson’s HawkButeo swainsoni
  
STRIGIFORMES: Tytonidae 
Barn OwlTyto alba
  
STRIGIFORMES: Strigidae 
Tropical Screech-OwlMegascops choliba
Long-tufted Screech-OwlMegascops sanctaecatarinae
Great Horned OwlBubo virginianus
Ferruginous Pygmy-OwlGlaucidium brasilianum
Burrowing OwlAthene cunicularia
Striped OwlAsio clamator
Short-eared OwlAsio flammeus
Buff-fronted OwlAegolius harrisii
  
TROGONIFORMES: Trogonidae 
Surucua TrogonTrogon surrucura
  
CORACIIFORMES: Alcedinidae 
Ringed KingfisherMegaceryle torquata
Amazon KingfisherChloroceryle amazona
Green KingfisherChloroceryle americana
  
PICIFORMES: Ramphastidae 
Toco ToucanRamphastos toco
  
PICIFORMES: Picidae 
White-barred PiculetPicumnus cirratus
Mottled PiculetPicumnus nebulosus
White WoodpeckerMelanerpes candidus
White-fronted WoodpeckerMelanerpes cactorum
White-spotted WoodpeckerDryobates spilogaster
Checkered WoodpeckerDryobates mixtus
Cream-backed WoodpeckerCampephilus leucopogon
White-browed WoodpeckerPiculus aurulentus
Green-barred WoodpeckerColaptes melanochloros
Campo FlickerColaptes campestris
  
CARIAMIFORMES: Cariamidae 
Red-legged SeriemaCariama cristata
  
FALCONIFORMES: Falconidae 
Southern CaracaraCaracara plancus
Yellow-headed CaracaraMilvago chimachima
Chimango CaracaraMilvago chimango
American KestrelFalco sparverius
Aplomado FalconFalco femoralis
Peregrine FalconFalco peregrinus
  
PSITTACIFORMES: Psittacidae 
Monk ParakeetMyiopsitta monachus
Yellow-chevroned ParakeetBrotogeris chiriri
Maroon-bellied ParakeetPyrrhura frontalis
Burrowing ParakeetCyanoliseus patagonus
Glaucous MacawAnodorhynchus glaucus
Nanday ParakeetAratinga nenday
Blue-crowned ParakeetThectocercus acuticaudatus
Mitred ParakeetPsittacara mitratus
White-eyed ParakeetPsittacara leucophthalmus
  
PASSERIFORMES: Thamnophilidae 
Large-tailed AntshrikeMackenziaena leachii
Rufous-capped AntshrikeThamnophilus ruficapillus
Variable AntshrikeThamnophilus caerulescens
  
PASSERIFORMES: Conopophagidae 
Rufous GnateaterConopophaga lineata
  
PASSERIFORMES: Furnariidae 
Common MinerGeositta cunicularia
Olivaceous WoodcreeperSittasomus griseicapillus
Planalto WoodcreeperDendrocolaptes platyrostris
Scimitar-billed WoodcreeperDrymornis bridgesii
Narrow-billed WoodcreeperLepidocolaptes angustirostris
Scalloped WoodcreeperLepidocolaptes falcinellus
Rufous HorneroFurnarius rufus
Sharp-tailed StreamcreeperLochmias nematura
Wren-like RushbirdPhleocryptes melanops
Curve-billed ReedhaunterLimnornis curvirostris
Buff-winged CinclodesCinclodes fuscus
Sharp-billed TreehunterHeliobletus contaminatus
Buff-browed Foliage-gleanerSyndactyla rufosuperciliata
Tufted Tit-SpinetailLeptasthenura platensis
Little ThornbirdPhacellodomus sibilatrix
Freckle-breasted ThornbirdPhacellodomus striaticollis
Greater ThornbirdPhacellodomus ruber
Orange-breasted ThornbirdPhacellodomus ferrugineigula
Firewood-gathererAnumbius annumbi
Lark-like BrushrunnerCoryphistera alaudina
Short-billed CanasteroAsthenes baeri
Hudson’s CanasteroAsthenes hudsoni
Sharp-billed CanasteroAsthenes pyrrholeuca
Straight-billed ReedhaunterLimnoctites rectirostris
Sulphur-bearded ReedhaunterLimnoctites sulphuriferus
Stripe-crowned SpinetailCranioleuca pyrrhophia
Olive SpinetailCranioleuca obsoleta
Bay-capped Wren-SpinetailSpartonoica maluroides
Brown CacholotePseudoseisura lophotes
Yellow-chinned SpinetailCerthiaxis cinnamomeus
Chotoy SpinetailSchoeniophylax phryganophilus
Gray-bellied SpinetailSynallaxis cinerascens
Spix’s SpinetailSynallaxis spixi
Pale-breasted SpinetailSynallaxis albescens
Sooty-fronted SpinetailSynallaxis frontalis
  
PASSERIFORMES: Cotingidae 
White-tipped PlantcutterPhytotoma rutila
Red-ruffed FruitcrowPyroderus scutatus
  
PASSERIFORMES: Tityridae 
White-naped XenopsarisXenopsaris albinucha
Green-backed BecardPachyramphus viridis
White-winged BecardPachyramphus polychopterus
Crested BecardPachyramphus validus
  
PASSERIFORMES: Tyrannidae 
Many-colored Rush TyrantTachuris rubrigastra
Mottle-cheeked TyrannuletPhylloscartes ventralis
Pearly-vented Tody-TyrantHemitriccus margaritaceiventer
Ochre-faced Tody-FlycatcherPoecilotriccus plumbeiceps
Yellow-olive FlycatcherTolmomyias sulphurescens
Cliff FlycatcherHirundinea ferruginea
Southern Beardless-TyrannuletCamptostoma obsoletum
Suiriri FlycatcherSuiriri suiriri
Bearded TachuriPolystictus pectoralis
Sharp-tailed TyrantCulicivora caudacuta
Crested DoraditoPseudocolopteryx sclateri
Warbling DoraditoPseudocolopteryx flaviventris
Greenish ElaeniaMyiopagis viridicata
Small-headed ElaeniaElaenia sordida
Yellow-bellied ElaeniaElaenia flavogaster
Small-billed ElaeniaElaenia parvirostris
Large ElaeniaElaenia spectabilis
Olivaceous ElaeniaElaenia mesoleuca
White-crested ElaeniaElaenia albiceps
Sooty TyrannuletSerpophaga nigricans
White-crested TyrannuletSerpophaga subcristata
White-bellied TyrannuletSerpophaga munda
Straneck’s TyrannuletSerpophaga griseicapilla
Rough-legged TyrannuletPhyllomyias burmeisteri
Greenish TyrannuletPhyllomyias virescens
Tawny-crowned Pygmy-TyrantEuscarthmus meloryphus
Bran-colored FlycatcherMyiophobus fasciatus
Euler’s FlycatcherLathrotriccus euleri
Fuscous FlycatcherCnemotriccus fuscatus
Southern Scrub-FlycatcherSublegatus modestus
Vermilion FlycatcherPyrocephalus rubinus
Austral NegritoLessonia rufa
Crested Black-TyrantKnipolegus lophotes
Blue-billed Black-TyrantKnipolegus cyanirostris
Spectacled TyrantHymenops perspicillatus
Yellow-browed TyrantSatrapa icterophrys
Dark-faced Ground-TyrantMuscisaxicola maclovianus
Gray-bellied Shrike-TyrantAgriornis micropterus
Lesser Shrike-TyrantAgriornis murinus
Gray MonjitaXolmis cinereus
Black-crowned MonjitaXolmis coronatus
White MonjitaXolmis irupero
Black-and-white MonjitaXolmis dominicanus
Chocolate-vented TyrantNeoxolmis rufiventris
Streamer-tailed TyrantGubernetes yetapa
Black-backed Water-TyrantFluvicola albiventer
White-headed Marsh TyrantArundinicola leucocephala
Strange-tailed TyrantAlectrurus risora
Rufous CasiornisCasiornis rufus
Swainson’s FlycatcherMyiarchus swainsoni
Short-crested FlycatcherMyiarchus ferox
Brown-crested FlycatcherMyiarchus tyrannulus
Cattle TyrantMachetornis rixosa
Great KiskadeePitangus sulphuratus
Boat-billed FlycatcherMegarynchus pitangua
Streaked FlycatcherMyiodynastes maculatus
Variegated FlycatcherEmpidonomus varius
Crowned Slaty FlycatcherEmpidonomus aurantioatrocristatus
Tropical KingbirdTyrannus melancholicus
Eastern KingbirdTyrannus tyrannus
Fork-tailed FlycatcherTyrannus savana
  
PASSERIFORMES: Vireonidae 
Rufous-browed PeppershrikeCyclarhis gujanensis
Chivi VireoVireo chivi
  
PASSERIFORMES: Corvidae 
Purplish JayCyanocorax cyanomelas
Azure JayCyanocorax caeruleus
Plush-crested JayCyanocorax chrysops
  
PASSERIFORMES: Hirundinidae 
Blue-and-white SwallowPygochelidon cyanoleuca
Tawny-headed SwallowAlopochelidon fucata
Southern Rough-winged SwallowStelgidopteryx ruficollis
Gray-breasted MartinProgne chalybea
Southern MartinProgne elegans
Brown-chested MartinProgne tapera
White-rumped SwallowTachycineta leucorrhoa
Chilean SwallowTachycineta leucopyga
Bank SwallowRiparia riparia
Barn SwallowHirundo rustica
Cliff SwallowPetrochelidon pyrrhonota
  
PASSERIFORMES: Polioptilidae 
Masked GnatcatcherPolioptila dumicola
  
PASSERIFORMES: Troglodytidae 
House WrenTroglodytes aedon
Sedge WrenCistothorus platensis
  
PASSERIFORMES: Sturnidae 
European StarlingSturnus vulgaris
Crested MynaAcridotheres cristatellus
  
PASSERIFORMES: Mimidae 
Chalk-browed MockingbirdMimus saturninus
White-banded MockingbirdMimus triurus
  
PASSERIFORMES: Turdidae 
Pale-breasted ThrushTurdus leucomelas
Yellow-legged ThrushTurdus flavipes
White-necked ThrushTurdus albicollis
Rufous-bellied ThrushTurdus rufiventris
Eastern Slaty ThrushTurdus subalaris
Creamy-bellied ThrushTurdus amaurochalinus
  
PASSERIFORMES: Passeridae 
House SparrowPasser domesticus
  
PASSERIFORMES: Motacillidae 
Yellowish PipitAnthus lutescens
Short-billed PipitAnthus furcatus
Correndera PipitAnthus correndera
Ochre-breasted PipitAnthus nattereri
Hellmayr’s PipitAnthus hellmayri
  
PASSERIFORMES: Fringillidae 
Blue-naped ChlorophoniaChlorophonia cyanea
Purple-throated EuphoniaEuphonia chlorotica
Antillean EuphoniaEuphonia musica
Golden-rumped EuphoniaEuphonia cyanocephala
European GreenfinchChloris chloris
European GoldfinchCarduelis carduelis
Hooded SiskinSpinus magellanicus
  
PASSERIFORMES: Passerellidae 
Grassland SparrowAmmodramus humeralis
Rufous-collared SparrowZonotrichia capensis
  
PASSERIFORMES: Icteridae 
BobolinkDolichonyx oryzivorus
White-browed MeadowlarkLeistes superciliaris
Pampas MeadowlarkLeistes defilippii
Crested OropendolaPsarocolius decumanus
Solitary Black CaciqueCacicus solitarius
Golden-winged CaciqueCacicus chrysopterus
Red-rumped CaciqueCacicus haemorrhous
Variable OrioleIcterus pyrrhopterus
Screaming CowbirdMolothrus rufoaxillaris
Shiny CowbirdMolothrus bonariensis
Scarlet-headed BlackbirdAmblyramphus holosericeus
Chopi BlackbirdGnorimopsar chopi
Grayish BaywingAgelaioides badius
Unicolored BlackbirdAgelasticus cyanopus
Yellow-winged BlackbirdAgelasticus thilius
Chestnut-capped BlackbirdChrysomus ruficapillus
Saffron-cowled BlackbirdXanthopsar flavus
Yellow-rumped MarshbirdPseudoleistes guirahuro
Brown-and-yellow MarshbirdPseudoleistes virescens
  
PASSERIFORMES: Parulidae 
Masked YellowthroatGeothlypis aequinoctialis
Tropical ParulaSetophaga pitiayumi
Blackpoll WarblerSetophaga striata
Golden-crowned WarblerBasileuterus culicivorus
White-browed WarblerMyiothlypis leucoblephara
  
PASSERIFORMES: Cardinalidae 
Hepatic TanagerPiranga flava
Glaucous-blue GrosbeakCyanoloxia glaucocaerulea
Ultramarine GrosbeakCyanoloxia brissonii
  
PASSERIFORMES: Thraupidae 
Red-crested CardinalParoaria coronata
Yellow-billed CardinalParoaria capitata
Gray-throated Warbling-FinchMicrospingus cabanisi
Black-capped Warbling-FinchMicrospingus melanoleucus
Black-goggled TanagerTrichothraupis melanops
Ruby-crowned TanagerTachyphonus coronatus
Diademed TanagerStephanophorus diadematus
Fawn-breasted TanagerPipraeidea melanonota
Blue-and-yellow TanagerPipraeidea bonariensis
Sayaca TanagerThraupis sayaca
Chestnut-backed TanagerStilpnia preciosa
Rufous-headed TanagerHemithraupis ruficapilla
Common Diuca-FinchDiuca diuca
Mourning Sierra-FinchRhopospina fruticeti
Long-tailed Reed FinchDonacospiza albifrons
Cinnamon Warbling-FinchPoospiza ornata
Black-and-rufous Warbling-FinchPoospiza nigrorufa
Saffron FinchSicalis flaveola
Grassland Yellow-FinchSicalis luteola
Wedge-tailed Grass-FinchEmberizoides herbicola
Lesser Grass-FinchEmberizoides ypiranganus
Great Pampa-FinchEmbernagra platensis
Blue-black GrassquitVolatinia jacarina
White-bellied SeedeaterSporophila leucoptera
Ruddy-breasted SeedeaterSporophila minuta
Pearly-bellied SeedeaterSporophila pileata
Tawny-bellied SeedeaterSporophila hypoxantha
Dark-throated SeedeaterSporophila ruficollis
Marsh SeedeaterSporophila palustris
Rufous-rumped SeedeaterSporophila hypochroma
Chestnut SeedeaterSporophila cinnamomea
Double-collared SeedeaterSporophila caerulescens
Rusty-collared SeedeaterSporophila collaris
Red-crested FinchCoryphospingus cucullatus
Yellow CardinalGubernatrix cristata
BananaquitCoereba flaveola
Many-colored Chaco FinchSaltatricula multicolor
Grayish SaltatorSaltator coerulescens
Green-winged SaltatorSaltator similis
Golden-billed SaltatorSaltator aurantiirostris

If you plan to travel to Uruguay for a birding trip, then take a proper superzoom camera with you.

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