PARAGUAY FULL TRIP LIST 3rd May 2005 to 2006 28th May
Note only first place where a species was seen is noted. Also see the separate site accounts and their lists on BSG.
Birding Site Guide
Species seen
- STRUTHIONIFORMES: Rheidae
- Greater Rhea Rhea americana NT Chaco
- TINAMIFORMES: Tinamidae
- Brown Tinamou Crypturellus obsoletus San Raf
- Undulated Tinamou Crypturellus undulatus L Blanca
- Small-billed Tinamou Crypturellus parvirostris L Blanca
- Tataupa Tinamou Crypturellus tataupa L Blanca
- Red-winged Tinamou Rhynchotus rufescens L Blanca
- Spotted Nothura Nothura maculosa Chaco
- Lesser Nothura Nothura minor L Blanca
- PODICIPEDIFORMES: Podicipedidae
- Least Grebe Tachybaptus dominicus Asuncion
- Pied-billed Grebe Podilymbus podiceps Asuncion
- PELECANIFORMES: Phalacrocoracidae
- Neotropic Cormorant Phalacrocorax brasilianus
- PELECANIFORMES: Anhingidae
- Anhinga Anhinga anhinga
- CICONIIFORMES: Ardeidae
- Whistling Heron Syrigma sibilatrix Chaco
- Cocoi Heron Ardea cocoi Chaco
- Great Egret Ardea alba Chaco
- Snowy Egret Egretta thula Chaco
- Cattle Egret Bubulcus ibis Chaco
- Striated Heron Butorides striata Asuncion
- Black-crowned Night-Heron Nycticorax nycticorax San Raf
- Rufescent Tiger-Heron Tigrisoma lineatum San Raf
- CICONIIFORMES: Ciconiidae
- Wood Stork Mycteria americana Chaco
- Maguari Stork Ciconia maguari Chaco
- Jabiru Jabiru mycteria Chaco
- CICONIIFORMES: Threskiornithidae
- Plumbeous Ibis Theristicus caerulescens Chaco
- Buff-necked Ibis Theristicus caudatus Chaco
- Bare-faced Ibis Phimosus infuscatus Asuncion
- White-faced Ibis Plegadis chihi Chaco
- PHOENICOPTERIFORMES: Phoenicopteridae
- Chilean Flamingo Phoenicopterus chilensis NT Asuncion
- ANSERIFORMES: Anhimidae
- Southern Screamer Chauna torquata km 97
- ANSERIFORMES: Anatidae
- Fulvous Whistling-Duck Dendrocygna bicolor Asuncion
- Brazilian Teal Amazonetta brasiliensis Chaco
- Rosy-billed Pochard Netta peposaca L Blanca
- Masked Duck Nomonyx dominica Encarn
- FALCONIFORMES: Cathartidae
- Black Vulture Coragyps atratus Chaco
- Turkey Vulture Cathartes aura Chaco
- Lesser Yellow-headed Vulture Cathartes burrovianus Encarn
- King Vulture Sarcoramphus papa Chaco
- FALCONIFORMES: Pandionidae
- Osprey Pandion haliaetus Encarn
- FALCONIFORMES: Accipitridae
- Gray-headed Kite Leptodon cayanensis Tirol
- Hook-billed Kite Chondrohierax uncinatus L Blanca
- Swallow-tailed Kite Elanoides forficatus L Blanca
- Pearl Kite Gampsonyx swainsonii L Blanca
- White-tailed Kite Elanus leucurus
- Snail Kite Rostrhamus sociabilis Chaco
- Rufous-thighed Kite Harpagus diodon Tirol
- Plumbeous Kite Ictinia plumbea Asun
- Long-winged Harrier Circus buffoni Chaco
- Rufous-thighed Hawk Accipiter erythronemius Asun
- Savanna Hawk Buteogallus meridionalis Chaco
- Black-collared Hawk Busarellus nigricollis L Blanca
- Roadside Hawk Buteo magnirostris Chaco
- Short-tailed Hawk Buteo brachyurus Tirol
- White-tailed Hawk Buteo albicaudatus
- FALCONIFORMES: Falconidae
- Southern Caracara Caracara plancus Chaco
- Yellow-headed Caracara Milvago chimachima Chaco
- Chimango Caracara Milvago chimango
- Laughing Falcon Herpetotheres cachinnans Tirol
- Barred Forest-Falcon Micrastur ruficollis San Raf
- American Kestrel Falco sparverius Chaco
- Aplomado Falcon Falco femoralis Chaco
- GALLIFORMES: Cracidae
- Chaco Chachalaca Ortalis canicollis Chaco
- Rusty-margined Guan Penelope superciliaris
- GRUIFORMES: Aramidae
- Limpkin Aramus guarauna Asuncion
- GRUIFORMES: Rallidae
- Gray-necked Wood-Rail Aramides cajanea Tirol
- Slaty-breasted Wood-Rail Aramides saracura
- Ash-throated Crake Porzana albicollis L Blanca
- Blackish Rail Pardirallus nigricans Encarn
- Plumbeous Rail Pardirallus sanguinolentus Encarn
- Purple Gallinule Porphyrio martinica Encarn
- Azure Gallinule Porphyrio flavirostris L Blanca
- Common Moorhen Gallinula chloropus Encarn
- Spot-flanked Gallinule Gallinula melanops Chaco
- White-winged Coot Fulica leucoptera Asuncion
- GRUIFORMES: Cariamidae
- Red-legged Seriema Cariama cristata h
- Black-legged Seriema Chunga burmeisteri Chaco
- CHARADRIIFORMES: Jacanidae
- Wattled Jacana Jacana jacana Chaco
- CHARADRIIFORMES: Rostratulidae
- CHARADRIIFORMES: Recurvirostridae
- White-backed Stilt Himantopus melanurus Chaco
- CHARADRIIFORMES: Charadriidae
- Southern Lapwing Vanellus chilensis Chaco
- American Golden-Plover Pluvialis dominica Encarn
- Collared Plover Charadrius collaris Asuncion
- CHARADRIIFORMES: Scolopacidae
- South American Snipe Gallinago paraguaiae Encarn
- Upland Sandpiper Bartramia longicauda Encarn
- Greater Yellowlegs Tringa melanoleuca Encarn
- Lesser Yellowlegs Tringa flavipes Encarn
- Solitary Sandpiper Tringa solitaria Asuncion
- Spotted Sandpiper Actitis macularia L Blanca
- White-rumped Sandpiper Calidris fuscicollis Encarn
- Pectoral Sandpiper Calidris melanotos Encarn
- Buff-breasted Sandpiper Tryngites subruficollis NT Asuncion
- Wilson's Phalarope Phalaropus tricolor Encarn
- CHARADRIIFORMES: Sternidae
- Yellow-billed Tern Sterna superciliaris Asuncion
- Large-billed Tern Phaetusa simplex Asuncion
- CHARADRIIFORMES: Rynchopidae
- Black Skimmer Rynchops niger Asuncion
- COLUMBIFORMES: Columbidae
- Rock Pigeon Columba livia Intro
- Picazuro Pigeon Patagioenas picazuro Chaco
- Pale-vented Pigeon Patagioenas cayennensis Asuncion
- Eared Dove Zenaida auriculata Chaco
- Ruddy Ground-Dove Columbina talpacoti
- Picui Ground-Dove Columbina picui Chaco
- Scaled Dove Columbina squammata L Blanca
- Blue Ground-Dove Claravis pretiosa L Blanca
- White-tipped Dove Leptotila verreauxi
- Gray-fronted Dove Leptotila rufaxilla San Raf
- Ruddy Quail-Dove Geotrygon montana Tirol
- PSITTACIFORMES: Psittacidae
- White-eyed Parakeet Aratinga leucophthalmus L Blanca
- Peach-fronted Parakeet Aratinga aurea L Blanca
- Monk Parakeet Myiopsitta monachus Chaco
- Yellow-chevroned Parakeet Brotogeris chiriri Encarn
- Pileated Parrot Pionopsitta pileata L Blanca
- Scaly-headed Parrot Pionus maximiliani L Blanca
- Blue-fronted Parrot Amazona aestiva L Blanca
- Vinaceous Parrot Amazona vinacea EN Chaco
- CUCULIFORMES: Cuculidae
- Dark-billed Cuckoo Coccyzus melacoryphus Encarn
- Squirrel Cuckoo Piaya cayana
- Greater Ani Crotophaga major L Blanco
- Smooth-billed Ani Crotophaga ani Chaco
- Guira Cuckoo Guira guira Chaco
- Striped Cuckoo Tapera naevia Tirol
- STRIGIFORMES: Tytonidae
- Barn Owl Tyto alba San Raf
- STRIGIFORMES: Strigidae
- Tropical Screech-Owl Megascops choliba Chaco
- Ferruginous Pygmy-Owl Glaucidium brasilianum L Blanca
- Burrowing Owl Athene cunicularia
- CAPRIMULGIFORMES: Nyctibiidae
- Common Potoo Nyctibius griseus L Blanca
- CAPRIMULGIFORMES: Caprimulgidae
- Chestnut-banded Nighthawk Lurocalis Tirol
- Common Nighthawk Chordeiles minor Tirol
- Nacunda Nighthawk Podager nacunda Encarn
- Pauraque Nyctidromus albicollis L Blanca
- Rufous Nightjar Caprimulgus rufus L Blanca
- White-winged Nightjar Caprimulgus candicans EN L Blanca
- Little Nightjar Caprimulgus parvulus Chaco
- Scissor-tailed Nightjar Hydropsalis torquata Chaco
- APODIFORMES: Apodidae
- Gray-rumped Swift Chaetura cinereiventris San Raf
- Ashy-tailed Swift Chaetura andrei Tirol
- TROCHILIFORMES: Trochilidae
- Scale-throated Hermit Phaethornis eurynome
- Black Jacobin Florisuga fuscus Encarn
- Black-throated Mango Anthracothorax nigricollis San Raf
- Plovercrest Stephanoxis lalandi Tirol
- Glittering-bellied Emerald Chlorostilbon aureoventris Chaco
- Fork-tailed Woodnymph Thalurania furcata Tirol
- Gilded Sapphire Hylocharis chrysura Encarn
- White-tailed Goldenthroat Polytmus guainumbi San Raf
- Versicolored Emerald Agyrtria versicolor Tirol
- Blue-tufted Starthroat Heliomaster furcifer Chaco
- TROGONIFORMES: Trogonidae
- Black-throated Trogon Trogon rufus San Raf
- Surucua Trogon Trogon surrucura
- CORACIIFORMES: Alcedinidae
- Ringed Kingfisher Ceryle torquatus Asuncion
- Amazon Kingfisher Chloroceryle amazona
- Green Kingfisher Chloroceryle americana Chaco
- CORACIIFORMES: Momotidae
- Rufous-capped Motmot Baryphthengus ruficapillus
- PICIFORMES: Bucconidae
- White-necked Puffbird Notharchus macrorhynchos L Blanca
- Buff-bellied Puffbird Notharchus swainsoni L Blanca
- White-eared Puffbird Nystalus chacuru Tirol
- Spot-backed Puffbird Nystalus maculatus L Blanca
- Rusty-breasted Nunlet Nonnula rubecula Tirol
- PICIFORMES: Ramphastidae
- Chestnut-eared Aracari Pteroglossus castanotis
- Saffron Toucanet Baillonius bailloni NT San Raf
- Red-breasted Toucan Ramphastos dicolorus San Raf
- Toco Toucan Ramphastos toco L Blanca
- PICIFORMES: Picidae
- White-barred Piculet Picumnus cirratus L Blanca
- Ochre-collared Piculet Picumnus temminckii Tirol
- White Woodpecker Melanerpes candidus Chaco
- Yellow-fronted Woodpecker Melanerpes flavifrons San Raf
- Little Woodpecker Veniliornis passerinus L Blanca
- White-spotted Woodpecker Veniliornis spilogaster Tirol
- Green-barred Woodpecker Colaptes melanochloros
- Campo Flicker Colaptes campestris
- Blond-crested Woodpecker Celeus flavescens L Blanca
- Helmeted Woodpecker Dryocopus galeatus VU L Blanca
- Lineated Woodpecker Dryocopus lineatus
- Robust Woodpecker Campephilus robustus San Raf
- Cream-backed Woodpecker Campephilus leucopogon Chaco
- PASSERIFORMES: Furnariidae
- Rufous Hornero Furnarius rufus Chaco
- Crested Hornero Furnarius cristatus Chaco
- Wren-like Rushbird Phleocryptes melanops Encarn
- Chotoy Spinetail Schoeniophylax phryganophila Encarn
- Sooty-fronted Spinetail Synallaxis frontalis Encarn
- Pale-breasted Spinetail Synallaxis albescens Chaco
- Chicli Spinetail Synallaxis spixi Encarn
- Rufous-capped Spinetail Synallaxis ruficapilla Tirol
- Gray-bellied Spinetail Synallaxis cinerascens Tirol
- Olive Spinetail Cranioleuca obsoleta San Raf
- Yellow-chinned Spinetail Certhiaxis cinnamomea Asuncion
- Bay-capped Wren-Spinetail Spartanoica maluroides Encarn
- Little Thornbird Phacellodomus sibilatrix Chaco
- Greater Thornbird Phacellodomus ruber Asuncion
- Lark-like Brushrunner Coryphistera alaudina Chaco
- Plain Xenops Xenops minutus
- Streaked Xenops Xenops rutilans
- Buff-browed Foliage-gleaner Syndactyla rufosuperciliata San Raf
- Buff-fronted Foliage-gleaner Philydor rufus San Raf
- Ochre-breasted Foliage-gleaner Philydor lichtensteini
- White-eyed Foliage-gleaner Automolus leucophthalmus Tirol
- Rufous-breasted Leaftosser Sclerurus scansor Tirol
- Sharp-tailed Streamcreeper Lochmias nematura
- PASSERIFORMES: Dendrocolaptidae
- Thrush-like Woodcreeper Dendrocincla turdina Tirol
- Olivaceous Woodcreeper Sittasomus griseicapillus
- Great Rufous Woodcreeper Xiphocolaptes major Tirol
- Planalto Woodcreeper Dendrocolaptes platyrostris Tirol
- Lesser Woodcreeper Xiphorhynchus fuscus
- Narrow-billed Woodcreeper Lepidocolaptes angustirostris Chaco
- Scaled Woodcreeper Lepidocolaptes falcinellus San Raf
- Black-billed Scythebill Campylorhamphus falcularius Tirol
- PASSERIFORMES: Thamnophilidae
- Spot-backed Antshrike Hypoedaleus guttatus San Raf
- Tufted Antshrike Mackenziaena severa Tirol
- Large-tailed Antshrike Mackenziaena leachii Tirol
- Barred Antshrike Thamnophilus doliatus Chaco
- Variable Antshrike Thamnophilus caerulescens Chaco
- Rufous-capped Antshrike Thamnophilus ruficapillus Asuncion
- Plain Antvireo Dysithamnus mentalis
- Black-capped Antwren Herpsilochmus atricapillus L Blanca
- Rufous-winged Antwren Herpsilochmus rufimarginatus Tirol
- Dusky-tailed Antbird Drymophila malura San Raf
- White-shouldered Fire-eye Pyriglena leucoptera
- PASSERIFORMES: Formicariidae
- Short-tailed Antthrush Chamaeza campanisona Tirol
- PASSERIFORMES: Conopophagidae
- Rufous Gnateater Conopophaga lineata
- PASSERIFORMES: Cotingidae
- Sharpbill Oxyruncus cristatus San Raf
- Red-ruffed Fruitcrow Pyroderus scutatus L Blanca
- Bare-throated Bellbird Procnias nudicollis NT nL Blanca
- PASSERIFORMES: Pipridae
- White-bearded Manakin Manacus manacus nL Blanca
- Blue Manakin Chiroxiphia caudata
- Band-tailed Manakin Pipra fasciicauda Tirol
- Greenish Schiffornis Schiffornis virescens
- PASSERIFORMES: Tyrannidae
- Southern Beardless-Tyrannulet Camptostoma obsoletum
- Yellow Tyrannulet Capsiempis flaveola Tirol
- Gray Elaenia Myiopagis caniceps Tirol
- Greenish Elaenia Myiopagis viridicata San Raf
- Large Elaenia Elaenia spectabilis Encarn
- Yellow-bellied Elaenia Elaenia flavogaster Chaco
- White-crested Elaenia Elaenia albiceps Tirol
- Small-billed Elaenia Elaenia parvirostris Tirol
- Lesser Elaenia Elaenia chiriquensis L Blanca
- White-crested Tyrannulet Serpophaga subcristata Encarn
- White-bellied Tyrannulet Serpophaga munda Encarn
- Gray-hooded Flycatcher Mionectes rufiventris
- Sepia-capped Flycatcher Leptopogon amaurocephalus
- Southern Bristle-Tyrant Pogonotriccus eximius NT
- Mottle-cheeked Tyrannulet Phylloscartes ventralis
- Southern Scrub-Flycatcher Sublegatus modestus Chaco
- Suiriri Flycatcher Suiriri suiriri L Blanco
- Sharp-tailed Tyrant Culicivora caudacuta NT L Blanco
- Crested Doradito Pseudocolopteryx sclateri Encarn
- Warbling Doradito Pseudocolopteryx flaviventris Encarn
- Tawny-crowned Pygmy-Tyrant Euscarthmus meloryphus Encarn
- Eared Pygmy-Tyrant Myiornis auricularis
- Ochre-faced Tody-Flycatcher Poecilotriccus plumbeiceps Tirol
- Drab-breasted Bamboo-Tyrant Hemitriccus diops San Raf
- Pearly-vented Tody-Tyrant Hemitriccus margaritaceiventer Chaco
- Southern Antpipit Corythopis delalandi Tirol
- Yellow-olive Flycatcher Tolmomyias sulphurescens
- White-throated Spadebill Platyrinchus mystaceus
- Bran-colored Flycatcher Myiophobus fasciatus Tirol
- Cliff Flycatcher Hirundinea ferruginea
- Fuscous Flycatcher Cnemotriccus fuscatus Tirol
- Euler's Flycatcher Lathrotriccus euleri Tirol
- Tropical Pewee Contopus cinereus
- Vermilion Flycatcher Pyrocephalus rubinus Chaco
- Gray Monjita Xolmis cinerea Chaco
- White-rumped Monjita Xolmis velata L Blaca
- White Monjita Xolmis irupero Chaco
- Cinereous Tyrant Knipolegus striaticeps Chaco
- Spectacled Tyrant Hymenops perspicillatus Chaco
- Black-backed Water-Tyrant Fluvicola albiventer Chaco
- Cock-tailed Tyrant Alectrurus tricolor VU L Blanca
- Strange-tailed Tyrant Alectrurus risora VU L Blanca
- Streamer-tailed Tyrant Gubernetes yetapa
- Yellow-browed Tyrant Satrapa icterophrys Encarn
- Long-tailed Tyrant Colonia colonus L Blanca
- Cattle Tyrant Machetornis rixosus Chaco
- Rufous Casiornis Casiornis rufa L Blanca
- Sirystes Sirystes sibilator
- Swainson's Flycatcher Myiarchus swainsoni Tirol
- Short-crested Flycatcher Myiarchus ferox Tirol
- Brown-crested Flycatcher Myiarchus tyrannulus L Blanca
- Great Kiskadee Pitangus sulphuratus Chaco
- Boat-billed Flycatcher Megarynchus pitangua L Blanca
- Social Flycatcher Myiozetetes similis
- Streaked Flycatcher Myiodynastes maculatus Tirol
- Piratic Flycatcher Legatus leucophaius Tirol
- Variegated Flycatcher Empidonomus varius Tirol
- Crowned Slaty Flycatcher Griseotyrannus aurantioatrocristatus L Blanca
- Tropical Kingbird Tyrannus melancholicus Tirol
- Eastern Kingbird Tyrannus tyrannus San Raf
- Fork-tailed Flycatcher Tyrannus savana Tirol
- Chestnut-crowned Becard Pachyramphus castaneus San Raf
- Green-backed Becard Pachyramphus viridis San Raf
- White-winged Becard Pachyramphus polychopterus Tirol
- Crested Becard Pachyramphus validus L Blanca
- Black-tailed Tityra Tityra cayana L Blanca
- Black-crowned Tityra Tityra inquisitor L Blanca
- Masked Tityra Tityra L Blanca
- PASSERIFORMES: Hirundinidae
- Brown-chested Martin Progne tapera Chaco
- Gray-breasted Martin Progne chalybea Asuncion
- White-winged Swallow Tachycineta albiventer Encarn
- White-rumped Swallow Tachycineta leucorrhoa Encarn
- Chilean Swallow Tachycineta meyeni Encarn
- Blue-and-white Swallow Notiochelidon cyanoleuca
- Black-collared Swallow Atticora melanoleuca Encarn
- Tawny-headed Swallow Alopochelidon fucata Asuncion
- Southern Rough-winged Swallow Stelgidopteryx ruficollis Asuncion
- Bank Swallow Riparia riparia Encarn
- Cliff Swallow Petrochelidon pyrrhonota L Blanca
- Barn Swallow Hirundo rustica
- PASSERIFORMES: Motacillidae
- Yellowish Pipit Anthus lutescens
- PASSERIFORMES: Troglodytidae
- Black-capped Donacobius Donacobius atricapilla L Blanca
- Thrush-like Wren Campylorhynchus turdinus Asuncion
- House Wren Troglodytes aedon
- Sedge Wren Cistothorus platensis San Raf
- PASSERIFORMES: Mimidae
- Chalk-browed Mockingbird Mimus saturninus
- White-banded Mockingbird Mimus triurus Chaco
- PASSERIFORMES: Turdidae
- Rufous-bellied Thrush Turdus rufiventris
- Pale-breasted Thrush Turdus leucomelas Tirol
- Creamy-bellied Thrush Turdus amaurochalinus Chaco
- White-necked Thrush Turdus albicollis Tirol
- PASSERIFORMES: Polioptilidae
- Creamy-bellied Gnatcatcher Polioptila lactea NT San Raf
- Masked Gnatcatcher Polioptila dumicola Chaco
- PASSERIFORMES: Corvidae
- Purplish Jay Cyanocorax cyanomelas L Blanca
- Curl-crested Jay Cyanocorax cristatellus L Blanca
- Plush-crested Jay Cyanocorax chrysops Chaco
- PASSERIFORMES: Vireonidae
- Red-eyed Vireo Vireo olivaceus Tirol
- Rufous-crowned Greenlet Hylophilus poicilotis Tirol
- Rufous-browed Peppershrike Cyclarhis gujanensis Tirol
- PASSERIFORMES: Parulidae
- Tropical Parula Parula pitiayumi Tirol
- Masked Yellowthroat Geothlypis aequinoctialis Tirol
- Golden-crowned Warbler Basileuterus culicivorus Tirol
- White-rimmed Warbler Basileuterus leucoblepharus Tirol
- Flavescent Warbler Basileuterus flaveolus L Blanca
- Neotropical River Warbler Basileuterus rivularis San Raf
- PASSERIFORMES: Coerebidae
- Bananaquit Coereba flaveola Tirol
- PASSERIFORMES: Thraupidae
- Chestnut-vented Conebill Conirostrum speciosum Tirol
- White-banded Tanager Neothraupis fasciata NT Encarn
- White-rumped Tanager Cypsnagra hirundinacea L Blanca
- Magpie Tanager Cissopis leveriana L Blanca
- Chestnut-headed Tanager Pyrrhocoma ruficeps Tirol
- Guira Tanager Hemithraupis guira Tirol
- Hooded Tanager Nemosia pileata L Blanca
- Ruby-crowned Tanager Tachyphonus coronatus Tirol
- Black-goggled Tanager Trichothraupis melanops Tirol
- Red-crowned Ant-Tanager Habia rubica Tirol
- Hepatic Tanager Piranga flava Chaco
- Silver-beaked Tanager Ramphocelus carbo Encarn
- Sayaca Tanager Thraupis sayaca Chaco
- Blue-and-yellow Tanager Thraupis bonariensis Encarn
- Fawn-breasted Tanager Pipraeidea melanonota Tirol
- Purple-throated Euphonia Euphonia chlorotica Chaco
- Violaceous Euphonia Euphonia violacea Tirol
- Golden-rumped Euphonia Euphonia cyanocephala Chaco
- Chestnut-bellied Euphonia Euphonia pectoralis Tirol
- Blue-naped Chlorophonia Chlorophonia cyanea Tirol
- Burnished-buff Tanager Tangara cayana L Blanca
- Blue Dacnis Dacnis cayana Tirol
- Swallow-Tanager Tersina viridis Tirol
- PASSERIFORMES: Emberizidae
- Black-masked Finch Coryphaspiza melanotis VU L Blanca
- Many-colored Chaco-Finch Saltatricula multicolor Chaco
- Red-crested Finch Coryphospingus cucullatus Chaco
- Long-tailed Reed-Finch Donacospiza albifrons Encarn
- Black-and-rufous Warbling-Finch Poospiza nigrorufa Encarn
- Ringed Warbling-Finch Poospiza torquata Chaco
- Black-capped Warbling-Finch Poospiza melanoleuca Asuncion
- Blue-black Grassquit Volatinia jacarina Encarn
- Plumbeous Seedeater Sporophila plumbea L Blanca
- Rusty-collared Seedeater Sporophila collaris Asuncion
- Double-collared Seedeater Sporophila caerulescens Encarn
- White-bellied Seedeater Sporophila leucoptera Asuncion
- Capped Seedeater Sporophila bouvreuil Encarn
- Tawny-bellied Seedeater Sporophila hypoxantha Asuncion
- Dark-throated Seedeater Sporophila ruficollis NT L Blanca
- Marsh Seedeater Sporophila palustris EN L Blanca
- Chestnut Seedeater Sporophila cinnamomea VU L Blanca
- Blackish-blue Seedeater Amaurospiza moesta NT San Raf
- Sooty Grassquit Tiaris fuliginosa San Raf
- Saffron Finch Sicalis flaveola
- Wedge-tailed Grass-Finch Emberizoides herbicola Encarn
- Lesser Grass-Finch Emberizoides ypiranganus Encarn
- Great Pampa-Finch Embernagra platensis Encarn
- Red-crested Cardinal Paroaria coronata Chaco
- Yellow-billed Cardinal Paroaria capitata Chaco
- Grassland Sparrow Ammodramus humeralis Chaco
- Rufous-collared Sparrow Zonotrichia capensis
- PASSERIFORMES: Cardinalidae
- Grayish Saltator Saltator coerulescens Asuncion
- Green-winged Saltator Saltator similis Tirol
- Golden-billed Saltator Saltator aurantiirostris Chaco
- Black-throated Saltator Saltator atricollis L Blanca
- Ultramarine Grosbeak Cyanocompsa brissonii Chaco
- PASSERIFORMES: Icteridae
- Unicolored Blackbird Agelasticus cyanopus Asuncion
- Chestnut-capped Blackbird Chrysomus ruficapillus Asuncion
- White-browed Blackbird Sturnella superciliaris Encarn
- Bay-winged Cowbird Molothrus badius Chaco
- Screaming Cowbird Molothrus rufoaxillaris L Blanca
- Shiny Cowbird Molothrus bonariensis
- Giant Cowbird Molothrus oryzivorus L Blanca
- Epaulet Oriole Icterus cayanensis Chaco
- Red-rumped Cacique Cacicus haemorrhous
- Golden-winged Cacique Cacicus chrysopterus San Raf
- Yellow-rumped Marshbird Pseudoleistes guirahuro Tirol
- Scarlet-headed Blackbird Amblyramphus holosericeus Encarn
- Chopi Blackbird Gnorimopsar chopi Chaco
- PASSERIFORMES: Fringillidae
- Hooded Siskin Carduelis magellanica Tirol
- PASSERIFORMES: Passeridae
- House Sparrow Passer domesticus Intro
KEY
- Defensors del Chaco NP (Chaco)
- Encarnacion
- Hotel Tirol
- Rancho Laguna Blanca
- Pratt's Gill (Chaco)
- San Rafael NP
Author: BSG
www.birdingsiteguide.com