KnowKi

Learn the wildlife of the U.S. national parks

Learn the wildlife of Petrified Forest National Park

AZ

844 species have research-grade observations inside Petrified Forest 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. Common Raven Corvus corax603
  2. Rock Wren Salpinctes obsoletus131
  3. Horned Lark Eremophila alpestris119
  4. Say's Phoebe Sayornis saya108
  5. Black-throated Sparrow Amphispiza bilineata78
  6. Greater Roadrunner Geococcyx californianus71
  7. Western Tanager Piranga ludoviciana64
  8. House Finch Haemorhous mexicanus60
  9. Red-tailed Hawk Buteo jamaicensis58
  10. House Sparrow Passer domesticus49

Plants

  1. Tree cholla Cylindropuntia imbricata243
  2. Fourwing Saltbush Atriplex canescens214
  3. Whipple Cholla Cylindropuntia whipplei183
  4. Plains Pricklypear Opuntia polyacantha150
  5. Golden mariposa lily Calochortus aureus145
  6. Flaxflowered Ipomopsis Ipomopsis longiflora135
  7. Desert Prince's Plume Stanleya pinnata130
  8. Stansbury's Cliffrose Purshia stansburyana117
  9. Silverleaf nightshade Solanum elaeagnifolium97
  10. Crispleaf buckwheat Eriogonum corymbosum86

Mammals

  1. Pronghorn Antilocapra americana177
  2. Mule Deer Odocoileus hemionus152
  3. Desert Cottontail Sylvilagus audubonii116
  4. Coyote Canis latrans75
  5. North American Porcupine Erethizon dorsatum53
  6. White-tailed Antelope Squirrel Ammospermophilus leucurus51
  7. Black-tailed Jackrabbit Lepus californicus50
  8. Gunnison's Prairie Dog Cynomys gunnisoni32
  9. Bobcat Lynx rufus31
  10. Wapiti Cervus canadensis27

Insects

  1. Rough Harvester Ant Pogonomyrmex rugosus67
  2. Purslane Moth Euscirrhopterus gloveri52
  3. White-lined Sphinx Hyles lineata43
  4. Pallid-winged Grasshopper Trimerotropis pallidipennis27
  5. Western Pygmy-Blue Brephidium exilis25
  6. European Mantis Mantis religiosa23
  7. Cotton-gall Tephritid Aciurina bigeloviae18
  8. Western Honey Bee Apis mellifera17
  9. Painted Lady Vanessa cardui17
  10. Variegated Fritillary Euptoieta claudia16

Spiders and kin

  1. Grand Canyon Black Tarantula Aphonopelma marxi25
  2. Western Black Widow Latrodectus hesperus19
  3. Desert Blonde Tarantula Aphonopelma chalcodes18
  4. Eastern sand scorpion Paruroctonus utahensis10
  5. Banded Garden Spider Argiope trifasciata8
  6. Desert Red Jumping Spider Phidippus ardens5
  7. Western Spotted Orbweaver Neoscona oaxacensis3
  8. Koch's Wolf Spider Alopecosa kochi3
  9. Western Parson Spider Herpyllus propinquus3
  10. Lesser Stripetail Scorpion Chihuahuanus coahuilae3

Reptiles

  1. Eastern Collared Lizard Crotaphytus collaris438
  2. Plateau Fence Lizard Sceloporus tristichus239
  3. Common Side-blotched Lizard Uta stansburiana193
  4. Gopher Snake Pituophis catenifer159
  5. Greater Short-horned Lizard Phrynosoma hernandesi116
  6. Western Earless Lizard Holbrookia maculata93
  7. Plateau Striped Whiptail Aspidoscelis velox84
  8. Striped Whipsnake Masticophis taeniatus58
  9. New Mexico Whiptail Aspidoscelis neomexicanus50
  10. Glossy Snake Arizona elegans43

Amphibians

  1. Great Plains Toad Anaxyrus cognatus101
  2. Mexican Spadefoot Spea multiplicata66
  3. Couch's Spadefoot Scaphiopus couchii41
  4. Red-spotted Toad Anaxyrus punctatus28
  5. Plains Spadefoot Spea bombifrons14
  6. Western Tiger Salamander Ambystoma mavortium11
  7. Woodhouse's Toad Anaxyrus woodhousii6

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.