KnowKi

Learn the wildlife of national parks

Learn the wildlife of Chaco National Park

Argentina

618 species have research-grade observations inside Chaco National Park on iNaturalist. KnowKi turns the most recorded into short lessons with real photos, so you know what you're looking at before you go.

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Āki the kiwi, KnowKi's guide

Most recorded here

The species with the most research-grade observations on iNaturalist, and how many each has. Most recorded doesn't mean native.

Birds

  1. Purplish Jay Cyanocorax cyanomelas64
  2. Plush-crested Jay Cyanocorax chrysops48
  3. Great Rufous Woodcreeper Xiphocolaptes major37
  4. Cream-backed Woodpecker Campephilus leucopogon37
  5. Golden-winged Cacique Cacicus chrysopterus31
  6. Variable Antshrike Thamnophilus caerulescens26
  7. White-lined Tanager Tachyphonus rufus25
  8. Giant Wood-Rail Aramides ypecaha23
  9. Brown-crested Flycatcher Myiarchus tyrannulus23
  10. Pearly-vented Tody-Tyrant Hemitriccus margaritaceiventer23

Plants

  1. Schinopsis balansae28
  2. Brazilian vaseplant Aechmea distichantha24
  3. False Pineapple Ananas macrodontes24
  4. Gleditsia amorphoides23
  5. Trichilia elegans22
  6. Capparicordis tweedieana14
  7. Southern raintree Brunfelsia australis12
  8. Violetflower petunia Petunia integrifolia11
  9. Ruellia erythropus11
  10. Justicia goudotii11

Mammals

  1. Southern Brown Brocket Subulo gouazoubira16
  2. Crab-eating Raccoon Procyon cancrivorus7
  3. Capybara Hydrochoerus hydrochaeris6
  4. South American Coati Nasua nasua3
  5. Crab-eating Fox Cerdocyon thous2
  6. Southern Long-nosed Armadillo Dasypus novemcinctus2
  7. Pampas Fox Lycalopex gymnocerca2
  8. Common Tapeti Sylvilagus brasiliensis1
  9. Brazilian Guinea Pig Cavia aperea1
  10. Jaguarundi Herpailurus yagouaroundi1

Insects

  1. White Peacock Anartia jatrophae13
  2. Pin-tailed Pondhawk Erythemis plebeja10
  3. Tailed Sulphur Phoebis neocypris9
  4. Band-winged Dragonlet Erythrodiplax umbrata8
  5. Black Pondhawk Erythemis attala7
  6. Banded Orange Heliconian Dryadula phaetusa7
  7. Doxocopa kallina7
  8. Soldier Grasshopper Chromacris speciosa7
  9. Anthanassa hermas7
  10. Fiebrig's Stingless Bee Tetragonisca fiebrigi7

Spiders and kin

  1. Peucetia rubrolineata9
  2. Ancylometes concolor5
  3. Freya nigrotaeniata5
  4. Psecas sumptuosus4
  5. Aglaoctenus lagotis3
  6. Bolivian Salmon Pink Tarantula Acanthoscurria chacoana3
  7. Silver Garden Orbweaver Argiope argentata2
  8. Hogna gumia2
  9. Banded Garden Spider Argiope trifasciata1
  10. Southern House Spider Kukulcania hibernalis1

Reptiles

  1. Four-toed Tegu Teius teyou8
  2. Argentine Black-and-white Tegu Salvator merianae7
  3. Spiny Lava Lizard Tropidurus spinulosus5
  4. Giant Ameiva Ameiva ameiva4
  5. Wagler's Snake Xenodon merremii4
  6. False Mussurana Boiruna maculata3
  7. Broad-snouted Caiman Caiman latirostris3
  8. Cope's Mabuya Notomabuya frenata3
  9. Southern Green Parrot Snake Leptophis marginatus3
  10. Two-colored Mussurana Mussurana bicolor2

Amphibians

  1. Mato Grosso Snouted Tree Frog Scinax acuminatus24
  2. Polka-dot Tree Frog Boana punctata21
  3. Cururu Toad Rhinella diptycha11
  4. Lesser Snouted Tree Frog Scinax nasicus10
  5. Chaco Tree Frog Boana raniceps10
  6. Pale-legged Weeping Frog Physalaemus albonotatus8
  7. Miranda's White-lipped Frog Leptodactylus macrosternum8
  8. Two-colored oval frog Elachistocleis bicolor7
  9. Chaco Granulated Toad Rhinella major7
  10. Vizcacheras' White-lipped Frog Leptodactylus bufonius5

How a trip works

A trip has its own trail of lessons: meet six species, match them to new photos, then practice with four choices. Species you learn go into your Fieldbook, and starting a trip earns its Passport stamp. Your home place stays as it is.

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Species lists and counts from research-grade observations on iNaturalist, as of October 2026. Parks outside the U.S. are from the World Database on Protected Areas (UNEP-WCMC and IUCN, Protected Planet). KnowKi is not affiliated with the National Park Service or any park's managers. Free, with no ads, no account, and no purchases.