KnowKi

Learn the wildlife of national parks

Learn the wildlife of Biesbosch National Park

Netherlands

759 species have research-grade observations inside Biesbosch 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. Great Crested Grebe Podiceps cristatus117
  2. Mute Swan Cygnus olor115
  3. Grey Heron Ardea cinerea112
  4. Mallard Anas platyrhynchos111
  5. Common Buzzard Buteo buteo95
  6. Common Coot Fulica atra77
  7. Black-headed Gull Chroicocephalus ridibundus76
  8. Gadwall Mareca strepera73
  9. Tufted Duck Aythya fuligula72
  10. Greylag Goose Anser anser70

Plants

  1. Himalayan balsam Impatiens glandulifera67
  2. Purple loosestrife Lythrum salicaria21
  3. Yellow Iris Iris pseudacorus11
  4. Common Fleabane Pulicaria dysenterica10
  5. Common comfrey Symphytum officinale9
  6. Common Tansy Tanacetum vulgare8
  7. Marsh marigold Caltha palustris8
  8. Common reed Phragmites australis8
  9. Sycamore maple Acer pseudoplatanus8
  10. Ground-ivy Glechoma hederacea7

Mammals

  1. Eurasian Beaver Castor fiber38
  2. Western Roe Deer Capreolus capreolus32
  3. Brown Hare Lepus europaeus17
  4. Red Fox Vulpes vulpes3
  5. Brown Rat Rattus norvegicus3
  6. Muskrat Ondatra zibethicus3
  7. European Mole Talpa europaea2
  8. Common Hedgehog Erinaceus europaeus1
  9. European Wood Mouse Apodemus sylvaticus1

Insects

  1. Black-tailed Skimmer Orthetrum cancellatum31
  2. European Peacock Butterfly Aglais io29
  3. Red Admiral Vanessa atalanta22
  4. Blue-tailed Damselfly Ischnura elegans21
  5. Speckled Wood Pararge aegeria17
  6. Musk beetle Aromia moschata15
  7. Scarce Chaser Libellula fulva15
  8. Hornet Mimic Hover Fly Volucella zonaria15
  9. Western Honey Bee Apis mellifera13
  10. Common Blue Polyommatus icarus13

Spiders and kin

  1. European Nursery Web spider Pisaura mirabilis5
  2. Furrow Orbweaver Larinioides cornutus5
  3. Leiobunum rotundum3
  4. Canestrini's Harvestman Opilio canestrinii3
  5. Walnut Orbweaver Nuctenea umbratica2
  6. Grey Cross Spider Larinioides sclopetarius2

Amphibians

  1. European Toad Bufo bufo12
  2. European Common Frog Rana temporaria7
  3. Edible Frog Pelophylax esculentus3

Fish

  1. Threespine Stickleback Gasterosteus aculeatus2
  2. Common Bream Abramis brama2
  3. Zander Sander lucioperca1
  4. Northern Pike Esox lucius1

Mollusks

  1. Brown-lipped Snail Cepaea nemoralis15
  2. Asian Clam Corbicula fluminea7
  3. Swollen River-mussel Unio tumidus3
  4. Copse Snail Arianta arbustorum2
  5. Hairy Snail Trochulus hispidus2

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.