home 2021, Cities, Parks City Nature Challenge 2021

City Nature Challenge 2021


Please turn on your phones for this nature walk.

The City Nature Challenge was founded by @alisonkestrel and @lilamayhiggins and organized by the citizen science / community science teams from the California Academy of Sciences @CalAcademy and the Natural History Museum of L.A. County @NHMLA

Hashtags: #CityNatureChallenge #RetoNaturaListaUrbano

Key Links

The challenge took place in two parts:
April 30 – May 3 Taking pictures of wild plants and animals
May 4 – May 9 Identifying what was found


Together 52,000 people from around the world, made over 1.27 million observations of 45k+ species. More than 2,100 rare/endangered/threatened species were documented in the 419 cities and 44 countries that took part.

Reto Naturalista “Bogotá expandida” 2021


  • For those keen on urban biodiversity, what are the recommended accounts to follow on Flickr, Twitter, and YouTube?
  • Who is reporting / blogging / tweeting about the City Nature Challenge?
  • What would city locals like visitors to know about nature in their cities?
  • How is City Nature Challenge translated in other languages? Bonus points for Indigenous languages.

Apps: iNaturalist

  • Visit iNaturalist.org
  • Download the app from the AppStore or Google Play
  • Sign In
  • Start sharing your observations
  • Get feedback from actual scientists, experts, and other naturalists

Elsewhere on the Web
St. Louis, Missouri

Cincy Parks 2021 City Nature Challenge
Texans invited to participate in City Nature Challenge

Embedded Tweets

Cape Town, South Africa

Join the Cape Town City Nature Challenge 2021


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