City Nature Challenge | WWF Hong Kong

© WWF-Hong Kong

City Nature Challenge 2021: SAVE THE DATE! 

The main organisers have confirmed the dates for City Nature Challenge 2021:

Friday, 30 April - Monday, 3 May 2021

On these dates, participants from cities all over the world will try to find as many plants andanimals as they can using the free app, iNaturalist! This is the largest synchronised biodiversity
monitoring project in the world...and it’s also a competition!!

Stay tuned for more information and how you can help Hong Kong put our magnificent
biodiversity on the world stage!


In light of the COVID-19 pandemic, this year’s City Nature Challenge 2020 emphasised the collaboration of communities rather than the competition, encouraging safe and responsible participation. In total, 41,165 observers from 244 cities around the world came together to document biodiversity adding over 815,000 observations to the iNaturalist database despite global lockdowns. An incredible feat!
Hong Kong’s results were as follows (with ranking out of 244 cities in 40 countries).
Observations: 17,137 (12th)
Species: 3,007 (3rd behind Cape Town and Houston/Galveston)
Observers: 460 (27th)
                    (Average 37 observations per person)
These results cement Hong Kong’s place as one of the most biodiverse cities in the world. Observation highlights include many species of rare birds recorded in Mai Po Nature Reserve. These include black-faced spoonbills, Asian dowitchers and various godwits, curlews and stints.

The City Nature Challenge is co-organised by the California Academy of Sciences and the Natural History Museum of Los Angeles County.

Let’s look at Hong Kong’s rich biodiversity.

© iNat User - dinoyu41
Burmese Python
© iNat User - dinoyu41
© iNat User - janho
Black-winged Stilt
© iNat User - janho
© iNat User - mango201188
Black-faced Spoonbill
© iNat User - mango201188
© WWF-Hong Kong
© WWF-Hong Kong