El Rey National Park

National Park · Argentina

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Photo © wildatlasguide

Where the eastern slopes of the Andes descend into northwestern Argentina's subtropical transition zone, El Rey National Park unfolds across 841 square kilometers of dramatically varied terrain. Cloud forests cling to high ridges where moisture-laden air collides with altitude, their canopies dripping with epiphytes and ferns, while at lower elevations the landscape opens into humid montane woodland and gallery forests that follow watercourses through deeper valleys. The park's elevation gradient—ranging from roughly 600 to 1,600 meters—creates a mosaic of ecological communities where temperate and subtropical flora intermingle, supporting populations of forest mammals, canopy-dwelling primates, and a rich assemblage of birds of prey, woodland songbirds, and insectivorous species adapted to humid mountain conditions. The rivers that cascade through these valleys sustain their own specialized faunas, including aquatic birds and riparian predators that exploit the abundance of flowing water in a region where precipitation shapes every ecosystem.

Website argentina.gob.ar/interior/ambiente/parquesnacionales/elrey

Ramphastos toco

Red-legged Seriema

Cariama cristata

Penelope bridgesi

Scaly-headed Parrot

Pionus maximiliani

Crested Oropendola

Psarocolius decumanus

Southern Lapwing

Vanellus chilensis

Crested Caracara

Caracara plancus

Amazonetta brasiliensis

Rufous Nightjar

Antrostomus rufus

Cream-backed Woodpecker

Campephilus leucopogon

Buff-browed Foliage-gleaner

Syndactyla rufosuperciliata

Chaco Chachalaca

Ortalis canicollis

Little Nightjar

Setopagis parvula

Tachybaptus dominicus

Neotropic Cormorant

Nannopterum brasilianum

Rufescent Tiger Heron

Tigrisoma lineatum

Rufous-collared Sparrow

Zonotrichia capensis

Southern Screamer

Chauna torquata

White-cheeked Pintail

Anas bahamensis

Red-fronted Coot

Fulica rufifrons

White-winged Coot

Fulica leucoptera

Whistling Heron

Syrigma sibilatrix

Sooty Tyrannulet

Serpophaga nigricans

Southern House Wren

Troglodytes musculus

Southern Yellowthroat

Geothlypis velata

Brown-capped Whitestart

Myioborus brunniceps

Ultramarine Grosbeak

Cyanoloxia brissonii

Plush-crested Jay

Cyanocorax chrysops

Buff-necked Ibis

Theristicus caudatus

Rufous-bellied Thrush

Turdus rufiventris

Green-cheeked Parakeet

Pyrrhura molinae

Rupornis magnirostris

Picazuro Pigeon

Patagioenas picazuro

Moss-backed Sparrow

Arremon dorbignii

Coragyps atratus

Great Black Hawk

Buteogallus urubitinga

Sarcoramphus papa

Sicalis flaveola

Thraupis sayaca

Golden-billed Saltator

Saltator aurantiirostris

Red Pileated Finch

Coryphospingus cucullatus

Rufous-browed Peppershrike

Cyclarhis gujanensis

Purple-throated Euphonia

Euphonia chlorotica

White-tipped Dove

Leptotila verreauxi

Creamy-bellied Thrush

Turdus amaurochalinus

Picui Ground Dove

Columbina picui

Olivaceous Woodcreeper

Sittasomus griseicapillus

Black-capped Warbling Finch

Microspingus melanoleucus

Pearly-vented Tody-Tyrant

Hemitriccus margaritaceiventer

Southern Martin

Fork-tailed Flycatcher

Tyrannus savana

Tropical Parula

Setophaga pitiayumi

Rosy-billed Pochard

Scissor-tailed Nightjar

Hydropsalis torquata

Mottle-cheeked Tyrannulet

Phylloscartes ventralis

Grey-cowled Wood Rail

Aramides cajaneus

Southern Rough-winged Swallow

Stelgidopteryx ruficollis

Tataupa Tinamou

Crypturellus tataupa

Nyctibius griseus

Common Squirrel Cuckoo

Ruddy Ground Dove

Columbina talpacoti

Leptotila megalura

Common Gallinule

Gallinula galeata

Pied-billed Grebe

Podilymbus podiceps

Swallow-tailed Kite

Elanoides forficatus

Athene cunicularia

Tropical Screech Owl

Megascops choliba

Yungas Screech Owl

Green Kingfisher

Chloroceryle americana

Mitred Parakeet

Psittacara mitratus

Small-billed Elaenia

Elaenia parvirostris

Highland Elaenia

Elaenia obscura

Yellow-browed Tyrant

Satrapa icterophrys

White-winged Black Tyrant

Knipolegus aterrimus

Piratic Flycatcher

Legatus leucophaius

Streaked Flycatcher

Myiodynastes maculatus

Dusky-capped Flycatcher

Myiarchus tuberculifer

Golden-rumped Euphonia

Chlorophonia cyanocephala

Golden-winged Cacique

Cacicus chrysopterus

Molothrus bonariensis

Pale-legged Warbler

Myiothlypis signata

Two-banded Warbler

Myiothlypis bivittata

Fawn-breasted Tanager

Pipraeidea melanonota

Blue-and-yellow Tanager

Rauenia bonariensis

Brushland Tinamou

Nothoprocta cinerascens

Spotted Nothura

Nothura maculosa

White-faced Whistling Duck

Dendrocygna viduata

Coscoroba coscoroba

Sarkidiornis sylvicola

Cairina moschata

Callonetta leucophrys

Spatula versicolor

Spatula platalea

Yellow-billed Pintail

Yellow-billed Teal

Anas flavirostris

Black-headed Duck

Heteronetta atricapilla

Nomonyx dominicus

Oxyura ferruginea

Short-tailed Nighthawk

Lurocalis semitorquatus

Band-winged Nightjar

Systellura longirostris

Rothschild's Swift

Cypseloides rothschildi

White-collared Swift

Streptoprocne zonaris

Chaetura meridionalis

Speckled Hummingbird

Adelomyia melanogenys

Red-tailed Comet

Sappho sparganurus

Blue-capped Puffleg

Eriocnemis glaucopoides

Blue-tufted Starthroat

Heliomaster furcifer

Slender-tailed Woodstar

Microstilbon burmeisteri

Glittering-bellied Emerald

Chlorostilbon lucidus

Gilded Sapphire

Hylocharis chrysura

Smooth-billed Ani

Dark-billed Cuckoo

Coccyzus melacoryphus

Spot-winged Pigeon

Patagioenas maculosa

Pale-vented Pigeon

Patagioenas cayennensis

Blue Ground Dove

Claravis pretiosa

Zenaida auriculata

Pardirallus sanguinolentus

Giant Wood Rail

Aramides ypecaha

Spot-flanked Gallinule

Porphyriops melanops

Red-gartered Coot

Fulica armillata

Rufous-sided Crake

Laterallus melanophaius

Aramus guarauna

White-tufted Grebe

Rollandia rolland

Black-necked Stilt

Himantopus mexicanus

Solitary Sandpiper

Tringa solitaria

Lesser Yellowlegs

Tringa flavipes

Greater Yellowlegs

Tringa melanoleuca

Baird's Sandpiper

Calidris bairdii

Mycteria americana

Ciconia maguari

Theristicus caerulescens

Bare-faced Ibis

Phimosus infuscatus

White-faced Ibis

Roseate Spoonbill

Fasciated Tiger Heron

Tigrisoma fasciatum

Black-crowned Night Heron

Nycticorax nycticorax

Butorides striata

White-tailed Kite

Elanus leucurus

Hook-billed Kite

Chondrohierax uncinatus

Black-and-white Hawk-Eagle

Spizaetus melanoleucus

Sharp-shinned Hawk

Accipiter striatus

Rufous-thighed Kite

Harpagus diodon

Geranospiza caerulescens

Rostrhamus sociabilis

Buteogallus meridionalis

Parabuteo unicinctus

White-rumped Hawk

Parabuteo leucorrhous

White-tailed Hawk

Geranoaetus albicaudatus

Geranoaetus polyosoma

Black-chested Buzzard-Eagle

Geranoaetus melanoleucus

Short-tailed Hawk

Buteo brachyurus

Swainson's Hawk

Buteo swainsoni

American Barn Owl

Yungas Pygmy Owl

Glaucidium bolivianum

Ferruginous Pygmy Owl

Glaucidium brasilianum

Pulsatrix perspicillata

Blue-crowned Trogon

Amazon Kingfisher

Chloroceryle amazona

Ringed Kingfisher

Megaceryle torquata

Amazonian Motmot

Spot-backed Puffbird

Nystalus maculatus

White-barred Piculet

Picumnus cirratus

White-fronted Woodpecker

Melanerpes cactorum

Dot-fronted Woodpecker

Veniliornis frontalis

Golden-green Woodpecker

Piculus chrysochloros

Golden-olive Woodpecker

Colaptes rubiginosus

Green-barred Woodpecker

Colaptes melanochloros

Black-legged Seriema

Chunga burmeisteri

Barred Forest Falcon

Micrastur ruficollis

Collared Forest Falcon

Micrastur semitorquatus

American Kestrel

Falco sparverius

Aplomado Falcon

Falco femoralis

Falco rufigularis

Peregrine Falcon

Falco peregrinus

Myiopsitta monachus

Amazona tucumana

Turquoise-fronted Amazon

Amazona aestiva

Blue-crowned Parakeet

Thectocercus acuticaudatus

Black-banded Woodcreeper

Dendrocolaptes picumnus

Great Rufous Woodcreeper

Xiphocolaptes major

Scimitar-billed Woodcreeper

Drymornis bridgesii

Narrow-billed Woodcreeper

Lepidocolaptes angustirostris

Streaked Xenops

Xenops rutilans

Chaco Earthcreeper

Tarphonomus certhioides

Furnarius rufus

Crested Hornero

Furnarius cristatus

Wren-like Rushbird

Phleocryptes melanops

Cream-winged Cinclodes

Cinclodes albiventris

Brown-capped Tit-Spinetail

Leptasthenura fuliginiceps

Rufous-fronted Thornbird

Phacellodomus rufifrons

Little Thornbird

Phacellodomus sibilatrix

Lark-like Brushrunner

Coryphistera alaudina

Short-billed Canastero

Stripe-crowned Spinetail

Cranioleuca pyrrhophia

Brown Cacholote

Pseudoseisura lophotes

Yellow-chinned Spinetail

Certhiaxis cinnamomeus

Chotoy Spinetail

Schoeniophylax phryganophilus

Ochre-cheeked Spinetail

Synallaxis scutata

Sooty-fronted Spinetail

Synallaxis frontalis

Azara's Spinetail

Synallaxis azarae

Black-capped Antwren

Herpsilochmus atricapillus

Barred Antshrike

Thamnophilus doliatus

Variable Antshrike

Thamnophilus caerulescens

Rufous-capped Antshrike

Thamnophilus ruficapillus

Great Antshrike

Giant Antshrike

Crested Gallito

Rhinocrypta lanceolata

White-browed Tapaculo

Scytalopus superciliaris

Olive-crowned Crescentchest

Melanopareia maximiliani

Grey-headed Elaenia

Myiopagis caniceps

Greenish Elaenia

Myiopagis viridicata

Elaenia spectabilis

White-crested Elaenia

Elaenia albiceps

Elaenia strepera

Southern Beardless Tyrannulet

Camptostoma obsoletum

Suiriri Flycatcher

Suiriri suiriri

White-throated Tyrannulet

Mecocerculus leucophrys

Buff-banded Tyrannulet

Mecocerculus hellmayri

Yellow-billed Tit-Tyrant

Anairetes flavirostris

Straneck's Tyrannulet

Serpophaga griseicapilla

Mouse-colored Tyrannulet

Nesotriccus murinus

Fulvous-crowned Scrub Tyrant

Euscarthmus meloryphus

Greater Wagtail-Tyrant

Stigmatura budytoides

Sepia-capped Flycatcher

Leptopogon amaurocephalus

Southern Scrub Flycatcher

Sublegatus modestus

Inezia inornata

Bran-colored Flycatcher

Myiophobus fasciatus

Ochre-faced Tody-Flycatcher

Poecilotriccus plumbeiceps

Yellow-olive Flatbill

Tolmomyias sulphurescens

Cinnamon Flycatcher

Pyrrhomyias cinnamomeus

Cliff Flycatcher

Hirundinea ferruginea

Euler's Flycatcher

Lathrotriccus euleri

Fuscous Flycatcher

Cnemotriccus fuscatus

Smoke-colored Pewee

Contopus fumigatus

Southern Tropical Pewee

Contopus cinereus

Vermilion Flycatcher

Pyrocephalus rubinus

Spectacled Tyrant

Hymenops perspicillatus

Plumbeous Tyrant

Knipolegus cabanisi

Cinereous Tyrant

Knipolegus striaticeps

Streak-throated Bush Tyrant

Myiotheretes striaticollis

Black-backed Water Tyrant

Fluvicola albiventer

Machetornis rixosa

Pitangus sulphuratus

Variegated Flycatcher

Empidonomus varius

Tropical Kingbird

Tyrannus melancholicus

Rufous Casiornis

Casiornis rufus

Swainson's Flycatcher

Myiarchus swainsoni

Brown-crested Flycatcher

Myiarchus tyrannulus

White-tipped Plantcutter

Phytotoma rutila

Green-backed Becard

Pachyramphus viridis

White-winged Becard

Pachyramphus polychopterus

Pachyramphus validus

Riparia riparia

White-rumped Swallow

Tachycineta leucorrhoa

Brown-chested Martin

Grey-breasted Martin

Progne chalybea

Blue-and-white Swallow

Pygochelidon cyanoleuca

Tawny-headed Swallow

Alopochelidon fucata

Troglodytes solstitialis

Masked Gnatcatcher

Polioptila dumicola

White-banded Mockingbird

Speckled Nightingale-Thrush

Catharus maculatus

Swainson's Thrush

Catharus ustulatus

Chiguanco Thrush

Turdus chiguanco

Andean Slaty Thrush

Turdus nigriceps

Passer domesticus

Yellowish Pipit

Spinus magellanicus

Common Chlorospingus

Chlorospingus flavopectus

Rhynchospiza dabbenei

Grassland Sparrow

Ammodramus humeralis

White-browed Brushfinch

Arremon torquatus

Yellow-striped Brushfinch

Atlapetes citrinellus

White-browed Meadowlark

Leistes superciliaris

Solitary Cacique

Cacicus solitarius

Variable Oriole

Icterus pyrrhopterus

Screaming Cowbird

Molothrus rufoaxillaris

Greyish Baywing

Agelaioides badius

Chestnut-capped Blackbird

Chrysomus ruficapillus

Golden-crowned Warbler

Basileuterus culicivorus

Black-backed Grosbeak

Pheucticus aureoventris

Embernagra platensis

Hemithraupis guira

Many-colored Chaco Finch

Saltatricula multicolor

Bluish-grey Saltator

Saltator coerulescens

Blue-black Grassquit

Volatinia jacarina

Lined Seedeater

Sporophila lineola

Double-collared Seedeater

Sporophila caerulescens

Orange-headed Tanager

Thlypopsis sordida

Rust-and-yellow Tanager

Thlypopsis ruficeps

Rusty-browed Warbling Finch

Microspingus erythrophrys

Ringed Warbling Finch

Microspingus torquatus

Chestnut-vented Conebill

Conirostrum speciosum

Grassland Yellow Finch

Sicalis luteola

Black-crested Finch

Lophospingus pusillus

Red-crested Cardinal

Paroaria coronata

Yellow-billed Cardinal

Paroaria capitata

White-vented Violetear

Colibri serrirostris

White-throated Quail-Dove

Zentrygon frenata

Ictinia plumbea

White-eyed Parakeet

Psittacara leucophthalmus

Molothrus oryzivorus

Southern Brown Brocket

Subulo gouazoubira

White-lipped Peccary

Tapirus terrestris

Crab-eating Raccoon

Procyon cancrivorus

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