KnowKi

Learn the wildlife of any country

Learn the wildlife of the United Kingdom

Europe

19,255 species have research-grade observations in the United Kingdom 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 platyrhynchos45,607
  2. European Robin Erithacus rubecula43,404
  3. Common Wood-Pigeon Columba palumbus35,219
  4. Eurasian Blackbird Turdus merula31,871
  5. Mute Swan Cygnus olor29,288
  6. Grey Heron Ardea cinerea28,741
  7. Black-headed Gull Chroicocephalus ridibundus26,010
  8. Carrion Crow Corvus corone25,918
  9. Eurasian Magpie Pica pica25,640
  10. Eurasian Moorhen Gallinula chloropus24,863

Plants

  1. Herb Robert Geranium robertianum32,277
  2. Red campion Silene dioica30,532
  3. Great stinging nettle Urtica dioica28,956
  4. Lesser celandine Ficaria verna28,326
  5. Lawn daisy Bellis perennis25,286
  6. Common yarrow Achillea millefolium24,193
  7. Garlic mustard Alliaria petiolata23,586
  8. Hogweed Heracleum sphondylium23,426
  9. Ribwort plantain Plantago lanceolata23,414
  10. Cow Parsley Anthriscus sylvestris22,817

Mammals

  1. Eastern Gray Squirrel Sciurus carolinensis26,508
  2. Common Hedgehog Erinaceus europaeus16,503
  3. Red Fox Vulpes vulpes11,497
  4. European Rabbit Oryctolagus cuniculus11,491
  5. Western Roe Deer Capreolus capreolus9,652
  6. Grey Seal Halichoerus grypus5,546
  7. European Mole Talpa europaea4,461
  8. Brown Rat Rattus norvegicus4,287
  9. Reeves's Muntjac Muntiacus reevesi3,978
  10. Brown Hare Lepus europaeus3,951

Insects

  1. Asian Lady Beetle Harmonia axyridis57,832
  2. Seven-spotted Lady Beetle Coccinella septempunctata49,355
  3. Speckled Wood Pararge aegeria39,756
  4. Red Admiral Vanessa atalanta33,655
  5. European Peacock Butterfly Aglais io30,015
  6. Large Yellow Underwing Noctua pronuba28,526
  7. Western Honey Bee Apis mellifera26,196
  8. Meadow Brown Maniola jurtina25,483
  9. Gatekeeper Pyronia tithonus24,826
  10. European Comma Polygonia c-album22,471

Spiders and kin

  1. Cross Orbweaver Araneus diadematus22,852
  2. European Nursery Web spider Pisaura mirabilis11,712
  3. Noble False Widow Steatoda nobilis10,201
  4. Long-bodied Cellar Spider Pholcus phalangioides7,017
  5. Goldenrod Crab Spider Misumena vatia5,022

Amphibians

  1. European Common Frog Rana temporaria19,374
  2. European Toad Bufo bufo16,499
  3. Smooth Newt Lissotriton vulgaris5,126

Mollusks

  1. Garden Snail Cornu aspersum18,761
  2. Brown-lipped Snail Cepaea nemoralis12,258
  3. White-lipped Snail Cepaea hortensis6,566
  4. Atlantic Dogwhelk Nucella lapillus3,543

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.