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  • FAQs
  • Events and Trainings
  • Resources
  • Contests
  • Collaborators
  • Previous Year Highlights
  • AZ BioBlitzes

2022 Results

Here are the collective results:


Observations: 1,694,877

Species: 50,176+, including more 2,244 than rare/endangered/threatened species

Observers: 67,220

Most-observed species globally: Common Dandelion (Taraxacum officinale)

2021 Results

That’s a wrap! The official City Nature Challenge results were announced on May 10th and we want to share them with you. Thank you to everyone who participated, we couldn’t be more excited about the results, especially for our first year!


Collective Global Results

Observations: 1,270,767

Species: 45,300+, including more than 2,100 rare/endangered/threatened species

Observers: 52,777

Most-observed species globally: Mallard (Anas platyrhynchos)


Global Top Three:
Cape Town, South Africa, Washington, D.C, and Dallas/Fort Worth 


Greater Phoenix landed as 30th in the world out of 419 cities!
Check out the global stats here.


Southwest Competition (Albuquerque, Phoenix, Tucson):
Albuquerque took first place, Greater Phoenix was second and Tucson took third. Congrats to Albuquerque! 


Together we made 22,857 observations of 2,138 species by 823 people.
See the competition.


Greater Phoenix Area:
We had 9,702 observations of 1039 species by 283 people. 291 people also made identifications! 


Top observer: @direwolfplayz with 1,729
Most species: @larivera with 239
Most identifications: @stevejones with 1,919 


Top 3 observed species: Triangle leaf bursage, Saguaro, Brittlebush


View the project page.


Photo Highlights from 2021

Owl family by @crolsky.  

Grackle chasing an eagle by @larandas. 

Urban fox by @oajenks. 

Backyard bobcat by @cew1208. 

Mating kingsnakes by @juliestromberg. 

 What a rat’s nest by @stevejones. 

Roaming bearded dragon by @trhamil602. 

Very buddy saguaro by @yammadoodles. 

Osprey with a snack by @direwolfplayz. 

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We hope you will join us in the future!!!


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