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Learn the wildlife of the U.S. national parks

Learn the wildlife of Theodore Roosevelt National Park

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830 species have research-grade observations inside Theodore Roosevelt 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. Lark Sparrow Chondestes grammacus108
  2. Spotted Towhee Pipilo maculatus106
  3. Wild Turkey Meleagris gallopavo99
  4. Lazuli Bunting Passerina amoena80
  5. Black-billed Magpie Pica hudsonia58
  6. Mountain Bluebird Sialia currucoides51
  7. Chipping Sparrow Spizella passerina50
  8. Western Meadowlark Sturnella neglecta46
  9. Eastern Kingbird Tyrannus tyrannus39
  10. American Robin Turdus migratorius37

Plants

  1. Plains Pricklypear Opuntia polyacantha536
  2. Silver buffaloberry Shepherdia argentea189
  3. Silver Sagebrush Artemisia cana166
  4. Rocky Mountain Juniper Juniperus scopulorum155
  5. Sego Lily Calochortus nuttallii131
  6. Western Snowberry Symphoricarpos occidentalis126
  7. Upright prairie coneflower Ratibida columnifera121
  8. Scarlet Globemallow Sphaeralcea coccinea117
  9. Narrow-leaved purple coneflower Echinacea angustifolia116
  10. Shrubby cinquefoil Dasiphora fruticosa107

Mammals

  1. American Bison Bos bison1,053
  2. Black-tailed Prairie Dog Cynomys ludovicianus758
  3. Domestic Horse Equus caballus338
  4. Mule Deer Odocoileus hemionus143
  5. Coyote Canis latrans87
  6. Pronghorn Antilocapra americana80
  7. Bighorn Sheep Ovis canadensis38
  8. Desert Cottontail Sylvilagus audubonii28
  9. Least Chipmunk Neotamias minimus24
  10. Wapiti Cervus canadensis20

Insects

  1. Leafy Spurge Hawkmoth Hyles euphorbiae74
  2. Sagebrush Checkerspot Chlosyne acastus42
  3. Two-striped Grasshopper Melanoplus bivittatus40
  4. Punctured Tiger Beetle Cicindelidia punctulata34
  5. Brown-belted Bumble Bee Bombus griseocollis33
  6. Western Harvester Ant Pogonomyrmex occidentalis27
  7. Clouded Sulphur Colias philodice26
  8. Big Sand Tiger Beetle Cicindela formosa25
  9. Red Admiral Vanessa atalanta23
  10. Variegated Fritillary Euptoieta claudia23

Spiders and kin

  1. Banded Garden Spider Argiope trifasciata36
  2. Cat-faced Orbweaver Araneus gemmoides6
  3. Apache Jumping Spider Phidippus apacheanus5
  4. Western Black Widow Latrodectus hesperus4
  5. Yellow Garden Spider Argiope aurantia3
  6. Whitman's Jumping Spider Phidippus whitmani3
  7. Northern Scorpion Paruroctonus boreus3
  8. American Dog Tick Dermacentor variabilis2

Reptiles

  1. Common Sagebrush Lizard Sceloporus graciosus69
  2. Gopher Snake Pituophis catenifer63
  3. Prairie Rattlesnake Crotalus viridis48
  4. North American Racer Coluber constrictor43
  5. Greater Short-horned Lizard Phrynosoma hernandesi35
  6. Plains Hognose Snake Heterodon nasicus12
  7. Plains Garter Snake Thamnophis radix7

Amphibians

  1. Woodhouse's Toad Anaxyrus woodhousii101
  2. Northern Leopard Frog Lithobates pipiens10
  3. Boreal Chorus Frog Pseudacris maculata3
  4. Great Plains Toad Anaxyrus cognatus3
  5. Plains Spadefoot Spea bombifrons2
  6. Western Tiger Salamander Ambystoma mavortium2

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. KnowKi is not affiliated with the National Park Service. Free, with no ads, no account and no purchases.