2026 City Nature Challenge

City Nature Challenge
City Nature Challenge Logo with city, left, and bird icons

The 2026 City Nature Challenge results are here! 

That’s a wrap on City Nature Challenge 2026! Your efforts to document local biodiversity have yielded incredibly impressive results! 

City Nature Challenge 2026 Global Results:

  • Total # of species documented: 76,422+
  • Total # of observers: 106,354
  • Total # of identifiers: 27,641+
  • Total # of observations: 3,001,825
  • Rare, Endangered, or Threatened species: 5688+
  • Most Observed Plant: Common Dandelion, Taraxacum officinale
  • Most Observed AnimalMallard, Ana platyrhynchos
  • Number of participating countries: 61
  • Number of participating cities: 754
  • Percentage of research grade observations: 40%

Thank you to each and every one of you who organized and facilitated local events, made observations and identifications, spread the word, and shared the biodiversity of the places you call home with the rest of the world. The City Nature Challenge would not be possible without all of our amazing local organizers! Thank you all!

It has been so rewarding to see the amazing observations made by community scientists across 6 continents and 61 countries. Here is a link to the results workbook. These are the project numbers pulled on May 10th. Check out some interesting and fun finds from around the world!

Mark Your Calendars for the 2027 City Nature Challenge

April 30 to May 3, 2027

The City Nature Challenge is an international effort to document nature in cities. The global event calls on current and aspiring community scientists, nature and science fans, and people of all ages and backgrounds to get outside and observe and submit pictures of wild plants, animals, and fungi during the Challenge dates in order to help scientists track real-time changes in our planet’s biodiversity and better understand wildlife conservation.

How to Participate

Download the iNaturalist app from the App Store or Google Play.

Step 1: Find wildlife anywhere in L.A. County (or your local area). 

Step 2: Take photos of WILD** plants & animals.

Step 3: Share Your observations in the iNaturalist app.

Step 4: Learn more as your finds get identified. 

**Wild means it was not put there or cared for by humans, so pets, zoo animals, potted plants, and city trees do not count for the City Nature Challenge.E 
 

iNaturalist How-To Videos

Adding an Observation on a Mobile Device

Adding an Observation via the Web

How to Take Identifiable Photos

The City Nature Challenge is brought to you by the Natural History Museum of Los Angeles County and California Academy of Sciences. Generous support provided by Metabolic Studio.

Organized By

Logos of the California Academy of Sciences and the Natural History Museum of Los Angeles County
The City Nature Challenge is brought to you by the Natural History Museum of Los Angeles County and California Academy of Sciences.

Generous support provided by Metabolic Studio

Partners include the following:

Heal the Bay logo
Logo of Los Angeles World Airports Natural Resources Management in blue text with an image of a white butterfly over sand dunes on a blue background
Logo of UCLA Mathias Botanical Garden with Blue and purple text and a purple flower
Logo of Palos Verdes Peninsula Land Conservancy with white text, green hills, and blue ocean
Logo of Rancho Los Alamitos in brown and blue text
Los Angeles Zoo logo in blue with an image of a snake, rhinoceros, and gorilla in a circle
Audubon Center at Debs Park, Clipart of Great Egret soaring on top left corner
Santa Monica Mountain Fund (black text), clipart collage of different organisms in color
Heal the Bay, Los Angeles World Airports, UCLA Mathias Botanical Garden, Palos Verdes Peninsula Land Conservancy, Rancho Los Alamitos, Los Angeles Zoo, Audubon Center at Debs Park, Santa Monica Mountain Fund

(top) Homies Unidos, (bottom) Believe in the possibility of a world without violence
(Top) Long Beach, (Bottom) Office of Climate Action and Sustainability
USC Viterbi, (bottom) School of Engineering, (Bottom) K-12 STEM Center 2026
The Arboretum (Main text in brown, with a simple green tree in between), Los Angeles County Arboretum & Botanic Garden (subtext)
Clipart of open book stacked on "Los Angles", which is stacked on "Public Library" in black
 (left) Image of overlapping Yellow-Blue-Green semi-circled shapes, (right, main text) LA County Chief Sustainability Office, (subtext) Environment, Economy, Equity
green box with white double-door clipart, (bottom) Ranch Los Cerritos
(Right - Top, negative space on blue box) LA, (Right - bottom, blue words) DWP, (Left stacked - blue words) Los Angeles Department of Water & Power
Homies Unidos, The City of Long Beach Office of Climate Action and Sustainability, USC Viterbi K-12 STEM Center, LA County Arboretum & Botanical Garden, LA Public Library, and LA County Chief Sustainability Office, Rancho Los Cerritos, Los Angeles Department of Water & Power