KnowKi

Learn the wildlife of national parks

Learn the wildlife of Nikko National Park

Japan

1,488 species have research-grade observations inside Nikko 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. Mallard Anas platyrhynchos35
  2. Great Spotted Woodpecker Dendrocopos major24
  3. White Wagtail Motacilla alba23
  4. Long-tailed Tit Aegithalos caudatus21
  5. Japanese Pygmy Woodpecker Yungipicus kizuki21
  6. Brown Dipper Cinclus pallasii20
  7. Coal Tit Periparus ater20
  8. Amur Stonechat Saxicola stejnegeri20
  9. Black Kite Milvus migrans19
  10. Willow Tit Poecile montanus18

Plants

  1. White Skunk Cabbage Lysichiton camtschatcensis30
  2. Mongolian Oak Quercus mongolica27
  3. Japanese larch Larix kaempferi26
  4. Pygmy Water-lily Nymphaea tetragona19
  5. Japanese Azalea Rhododendron japonicum18
  6. Convulsion Root Monotropastrum humile18
  7. Amur day-lily Hemerocallis middendorffii17
  8. Japanese Primrose Primula japonica14
  9. Aster ageratoides14
  10. Japanese knotweed Reynoutria japonica14

Mammals

  1. Japanese Macaque Macaca fuscata53
  2. Sika Deer Cervus nippon50
  3. Japanese Serow Capricornis crispus6
  4. Asian Black Bear Ursus thibetanus5
  5. Japanese Badger Meles anakuma3
  6. Japanese Marten Martes melampus2

Insects

  1. Autumn Darter Sympetrum frequens49
  2. Japanese Stink Bug Pentatoma japonica26
  3. Ezo Spring Cicada Yezoterpnosia nigricosta24
  4. Mourning Cloak Nymphalis antiopa23
  5. Miyama Stag Beetle Lucanus maculifemoratus16
  6. Silver-washed Fritillary Argynnis paphia13
  7. Pterodecta felderi13
  8. Nannophya koreana13
  9. Japanese Knotweed Leaf Beetle Gallerucida bifasciata12
  10. Diana treebrown Lethe diana12

Spiders and kin

  1. Odiellus aspersus4
  2. Oxytate striatipes3
  3. Joro Spider Trichonephila clavata3
  4. Wasp Spider Argiope bruennichi2

Reptiles

  1. Japanese Forest Ratsnake Euprepiophis conspicillatus9
  2. Japanese five-lined skink Plestiodon finitimus9
  3. Tiger Keelback Rhabdophis tigrinus7
  4. Japanese Four-lined Ratsnake Elaphe quadrivirgata4
  5. Japanese Ratsnake Elaphe climacophora3
  6. Japanese Grass Lizard Takydromus tachydromoides3

Amphibians

  1. Japanese Fire-bellied Newt Cynops pyrrhogaster20
  2. Eastern-Japanese Common Toad Bufo formosus18
  3. Montane Brown Frog Rana ornativentris4
  4. Kajika Frog Buergeria buergeri3
  5. Tago's Brown Frog Rana tagoi2

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.