KnowKi

Learn the wildlife of national parks

Learn the wildlife of Donau-Auen National Park

Wien · Austria

1,913 species have research-grade observations inside Donau-Auen 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 Spotted Woodpecker Dendrocopos major100
  2. Great Tit Parus major99
  3. Eurasian Blue Tit Cyanistes caeruleus86
  4. Mute Swan Cygnus olor85
  5. Mallard Anas platyrhynchos84
  6. Eurasian Nuthatch Sitta europaea75
  7. Long-tailed Tit Aegithalos caudatus64
  8. Great Reed Warbler Acrocephalus arundinaceus52
  9. Common Chaffinch Fringilla coelebs42
  10. Great Cormorant Phalacrocorax carbo38

Plants

  1. Green-winged orchid Anacamptis morio386
  2. Military Orchid Orchis militaris256
  3. Purple Gromwell Aegonychon purpurocaeruleum158
  4. Burnt-tip Orchid Neotinea ustulata144
  5. Bug Orchid Anacamptis coriophora129
  6. Cypress spurge Euphorbia cyparissias103
  7. Birthwort Aristolochia clematitis101
  8. European barberry Berberis vulgaris75
  9. Prostrate Speedwell Veronica prostrata72
  10. Autumn Ladies' Tresses Spiranthes spiralis71

Mammals

  1. Eurasian Beaver Castor fiber44
  2. Wild Boar Sus scrofa19
  3. Eurasian Red Squirrel Sciurus vulgaris16
  4. Western Roe Deer Capreolus capreolus9
  5. Red Fox Vulpes vulpes7

Insects

  1. Ruddy Darter Sympetrum sanguineum111
  2. Common Winter Damselfly Sympecma fusca110
  3. Variable Bluet Coenagrion pulchellum102
  4. Southern Festoon Zerynthia polyxena98
  5. Speckled Wood Pararge aegeria95
  6. European Mantis Mantis religiosa88
  7. Black Oil Beetle Meloe proscarabaeus82
  8. Broad Scarlet Crocothemis erythraea82
  9. Silver-washed Fritillary Argynnis paphia77
  10. European Comma Polygonia c-album76

Spiders and kin

  1. European Nursery Web spider Pisaura mirabilis42
  2. Carrhotus xanthogramma16
  3. Wasp Spider Argiope bruennichi10
  4. Goldenrod Crab Spider Misumena vatia9
  5. Gorse Orbweaver Agalenatea redii8
  6. Buzzing Spider Anyphaena accentuata8
  7. Red Nail Gall Mite Eriophyes tiliae7

Reptiles

  1. Grass snake Natrix natrix135
  2. Common Slowworm Anguis fragilis84
  3. Pond Slider Trachemys scripta52
  4. Sand Lizard Lacerta agilis41
  5. Aesculapian Snake Zamenis longissimus38
  6. Smooth Snake Coronella austriaca22

Amphibians

  1. Agile Frog Rana dalmatina133
  2. European Fire-Bellied Toad Bombina bombina90
  3. European Toad Bufo bufo78
  4. Smooth Newt Lissotriton vulgaris40
  5. European Tree Frog Hyla arborea33
  6. Common Spadefoot Pelobates fuscus10

Fish

  1. Pumpkinseed Lepomis gibbosus49
  2. Common Rudd Scardinius erythrophthalmus33
  3. European Carp Cyprinus carpio31
  4. Northern Pike Esox lucius19
  5. European Perch Perca fluviatilis10

Mollusks

  1. Vineyard Snail Caucasotachea vindobonensis95
  2. White-lipped Snail Cepaea hortensis13
  3. Great Ram's-horn Planorbarius corneus12
  4. Roman Snail Helix pomatia9
  5. Great Pond Snail Lymnaea stagnalis8
  6. Eastern Heath Snail Xerolenta obvia8

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.