KnowKi

Learn the wildlife of national parks

Learn the wildlife of Sierra de Guadarrama National Park

Spain

1,410 species have research-grade observations inside Sierra de Guadarrama 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. Dunnock Prunella modularis227
  2. Eurasian Griffon Gyps fulvus182
  3. Cinereous Vulture Aegypius monachus140
  4. Northern Wheatear Oenanthe oenanthe106
  5. Common Chaffinch Fringilla coelebs77
  6. Common Raven Corvus corax71
  7. Rock Bunting Emberiza cia68
  8. Coal Tit Periparus ater66
  9. Eurasian Jay Garrulus glandarius55
  10. Black Redstart Phoenicurus ochruros55

Plants

  1. Scots pine Pinus sylvestris349
  2. Pyrenean broom Cytisus oromediterraneus236
  3. Common juniper Juniperus communis231
  4. Gum Rock-rose Cistus ladanifer151
  5. Round-leaved sundew Drosera rotundifolia149
  6. Linaria nivea141
  7. European holly Ilex aquifolium115
  8. Short-leaved Stonecrop Sedum brevifolium114
  9. Adenocarpus hispanicus109
  10. Common bracken Pteridium aquilinum106

Mammals

  1. Iberian Ibex Capra pyrenaica487
  2. Western Roe Deer Capreolus capreolus23
  3. Red Fox Vulpes vulpes20
  4. Wild Boar Sus scrofa9
  5. European Snow Vole Chionomys nivalis7
  6. Eurasian Red Squirrel Sciurus vulgaris6
  7. Common Hedgehog Erinaceus europaeus5

Insects

  1. Queen of Spain Fritillary Issoria lathonia145
  2. Scarce Copper Lycaena virgaureae133
  3. Lluciapomaresius stalii122
  4. Small Tortoiseshell Aglais urticae119
  5. Iberian marbled white Melanargia lachesis111
  6. Small Copper Lycaena phlaeas96
  7. Cardinal Butterfly Argynnis pandora93
  8. Seven-spotted Lady Beetle Coccinella septempunctata77
  9. Apollo Parnassius apollo73
  10. Rock Grayling Hipparchia alcyone73

Spiders and kin

  1. Heather crab spider Thomisus onustus15
  2. Ladybird Spider Eresus kollari15
  3. Oak Spider Aculepeira ceropegia14
  4. Red-bellied Jumping Spider Philaeus chrysops7
  5. Napoleon Spider Synema globosum7
  6. Spanish wolf spider Lycosa hispanica7
  7. Green Huntsman Spider Micrommata virescens4
  8. Five-spotted star-web spider Uroctea durandi4

Reptiles

  1. Cyren’s Rock Lizard Iberolacerta cyreni268
  2. Common Wall Lizard Podarcis muralis227
  3. Guadarrama Wall Lizard Podarcis guadarramae184
  4. Iberian Emerald Lizard Lacerta schreiberi60
  5. Large Psammodromus Psammodromus algirus56
  6. Smooth Snake Coronella austriaca44
  7. Ocellated Lizard Timon lepidus18
  8. Viperine Snake Natrix maura7
  9. Spiny-footed Lizard Acanthodactylus erythrurus7
  10. Southern Smooth Snake Coronella girondica6

Amphibians

  1. Fire Salamander Salamandra salamandra85
  2. Iberian Frog Rana iberica84
  3. Natterjack Toad Epidalea calamita49
  4. Spiny Toad Bufo spinosus33
  5. Alpine Newt Mesotriton alpestris31
  6. Iberian Tree Frog Hyla molleri25
  7. Iberian Green Frog Pelophylax perezi14
  8. Marbled Newt Triturus marmoratus13
  9. Common Midwife Toad Alytes obstetricans8

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.