KnowKi

Learn the wildlife of any country

Learn the wildlife of Romania

Europe

10,018 species have research-grade observations in Romania on iNaturalist. KnowKi turns the most recorded into short lessons with real photos, so you can learn a country's wildlife from home.

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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 platyrhynchos2,660
  2. Common Buzzard Buteo buteo1,965
  3. Eurasian Blackbird Turdus merula1,751
  4. Rock Pigeon Columba livia1,615
  5. Mute Swan Cygnus olor1,548
  6. Hooded Crow Corvus cornix1,531
  7. Great Tit Parus major1,486
  8. Red-backed Shrike Lanius collurio1,435
  9. House Sparrow Passer domesticus1,363
  10. Common Chaffinch Fringilla coelebs1,309

Plants

  1. Tree-of-heaven Ailanthus altissima3,244
  2. Redroot Amaranth Amaranthus retroflexus806
  3. Common Purslane Portulaca oleracea781
  4. Box elder Acer negundo709
  5. Greater celandine Chelidonium majus599
  6. Lesser celandine Ficaria verna583
  7. Cypress spurge Euphorbia cyparissias578
  8. Green-winged orchid Anacamptis morio575
  9. Red deadnettle Lamium purpureum570
  10. Black locust Robinia pseudoacacia530

Mammals

  1. Brown Bear Ursus arctos1,238
  2. Western Roe Deer Capreolus capreolus821
  3. Northern White-breasted Hedgehog Erinaceus roumanicus730
  4. Red Fox Vulpes vulpes641
  5. Eurasian Red Squirrel Sciurus vulgaris535
  6. European Ground Squirrel Spermophilus citellus326
  7. Domestic Cat Felis catus319
  8. Brown Hare Lepus europaeus274
  9. European Badger Meles meles218
  10. Red Deer Cervus elaphus194

Insects

  1. Seven-spotted Lady Beetle Coccinella septempunctata1,568
  2. European Stag Beetle Lucanus cervus1,374
  3. Asian Lady Beetle Harmonia axyridis1,260
  4. Transcaucasian Giant Mantis Hierodula transcaucasica1,134
  5. European Firebug Pyrrhocoris apterus1,037
  6. European Mantis Mantis religiosa965
  7. European Rose Chafer Cetonia aurata905
  8. Western Honey Bee Apis mellifera829
  9. Red Admiral Vanessa atalanta793
  10. Scarce Swallowtail Iphiclides podalirius756

Spiders and kin

  1. Wasp Spider Argiope bruennichi526
  2. Cross Orbweaver Araneus diadematus484
  3. Radiated Wolf Spider Hogna radiata298
  4. Triangulate Combfoot Steatoda triangulosa243
  5. Goldenrod Crab Spider Misumena vatia231
  6. Marbled Cellar Spider Holocnemus pluchei169
  7. Heather crab spider Thomisus onustus156

Reptiles

  1. Green Lizard Lacerta viridis1,120
  2. Sand Lizard Lacerta agilis873
  3. Grass snake Natrix natrix848
  4. Common Wall Lizard Podarcis muralis742
  5. Greek Tortoise Testudo graeca555
  6. European Pond Turtle Emys orbicularis521
  7. Tessellated Water Snake Natrix tessellata492
  8. Eastern Slowworm Anguis colchica477
  9. Viviparous Lizard Zootoca vivipara342
  10. Pond Slider Trachemys scripta272

Amphibians

  1. Yellow-bellied Toad Bombina variegata892
  2. Green Toad Bufotes viridis828
  3. European Common Frog Rana temporaria533
  4. European Toad Bufo bufo531
  5. Fire Salamander Salamandra salamandra526
  6. Marsh Frog Pelophylax ridibundus504
  7. Agile Frog Rana dalmatina416
  8. Eastern Tree Frog Hyla orientalis349
  9. Smooth Newt Lissotriton vulgaris200
  10. European Fire-Bellied Toad Bombina bombina178

Mollusks

  1. Roman Snail Helix pomatia1,001
  2. Vineyard Snail Caucasotachea vindobonensis644
  3. Turkish Snail Helix lucorum459
  4. Leopard Slug Limax maximus223
  5. Spanish Slug Arion vulgaris204
  6. Veined Rapa Whelk Rapana venosa163

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. Free, with no ads, no account and no purchases.