City Nature Challenge 2026

Mission Biodiversity: An App-Guided Expedition at the Zoo

All it takes is your smartphone to make a difference. Join the biggest citizen science initiative in Nuremberg, Fürth, and Erlangen! The City Nature Challenge is an invitation to become more aware of nature’s diversity. With the iNaturalist app, you can playfully discover, identify, and share plants, animals, and fungi with others. Your findings count! For four days, the Tiergarten and the Bionicum will become a research field.

A woodpecker tapping in the treetops? A squirrel darting from branch to branch? A beetle glistening in the leaves at your feet? Quick—grab your camera, take a picture, and upload it to the cloud. Important: Please upload only photos of native animals that you find outside of animal enclosures.

What began as a small idea between two cities (Los Angeles and San Francisco) has now become a global movement: people are working together to collect data on biodiversity. Thanks to swarm intelligence, many small observations come together to form a big picture of nature.

For anyone who doesn't want to explore on their own, we offer a guided nature walk using an app.

When? April 26, 2026, 3:30–5:00 p.m.
Where? Meet at the Bionicum; we’ll head out together on a zoo expedition
Who? Max. 20 participants; registration: info@bionicum.de / 0911 650 845 00
Cost? Free for all zoo visitors
Important: Please download the app in advance: https://www.inaturalist.org/