City Nature Challenge 2020 - London

A mother and her children explore the Museum's wildlife garden as they look for wildlife

Take part in a global competition by finding and identifying nature in London.

London is competing with over 200 cities worldwide, including 10 other UK cities, to find and record the most wildlife across the city in a four day period. You can find out more at

As part of the challenge we are holding a BioBlitz in the Museum Wildlife Garden. This will feature an exciting programme of guided walks and drop in activities. A team of dedicated scientists, naturalists and volunteers will be available to help you identify all the animals, plants and other living things you find. The information collected from your observations will help to create a valuable record of London’s biodiversity. 

Everyone can take part in the City Nature Challenge - both Londoners as well as visitors to the city. There will be activities for children aged five and over as well as adults.

We’re hoping to make London one of the winning cities for 2020, so come along and help us record as much wildlife as you can!

At a glance

Discover nature in London and help the city win the City Nature Challenge 2020!

Type of activity: Outdoors

Who can take part? Everyone

When? Saturday 25 April 2020 (other activities take place across the weekend)

Where? Museum Wildlife Garden (plus further local events across London)

How long will it take? About two minutes per observation

Cost: Free

City Nature Challenge London is being led by the Museum in partnership with the Royal Parks, University College London, the Field Studies Council, the Linnean Society and London Environmental Educators Forum.

How can I get involved?

1. Download the free iNaturalist app from the AppStore or Google Play and set up your account.

2. Between 24 and 27 April 2020 use the app to photograph and record any wildlife you see, anywhere in Greater London. You can also take part using the iNaturalist website.

3. You can join the City Nature Challenge 2020: London project page on iNaturalist to see how many wildlife observations have been recorded across the city.

4. Saturday 25 April 2020: Join our drop-in BioBlitz event 11:00 am onwards at Wildlife Garden. Please share details with family and friends. There will be a number of surveys and nature themed activities on the day, including an earthworm survey, pond dipping and guided walks. Family activities will be especially suitable for those with children aged 5-14.

Activities around London

There are a host of  free activities taking place around London over the City Nature Challenge weekend. Please see the map below for events in your area.


City Nature Challenge 2020 around the UK

Elveen UK cities are taking part in this year's event, competing against over 200 cities worldwide. If you are in any of the following cities between 24 - 27 April 2020, you can take part by using iNaturalist to record any wildlife you see. 

Events across London

There are free events happening acoss London over the Challenge weekend. See the map on this page.

You can search for pre-bookable activities on Eventbrite using the search term ‘City Nature Challenge London 2020’.

Further information

City Nature Challenge is organised by:

Supporting organisations