Spend an evening getting to know these adorable, nocturnal, flying mammals that play a vital role in the ecological balance. Bats are true indicators of an ecosystem’s health. What is their way of life? How can we coexist with them?
Acoustic walks, expert booths, a lecture… Connect with the subtle world of bats on a balmy summer evening.

Program
In the event hall of the Restaurant des Evaux and on its terrace:
Activities for all ages

• Lecture on bats (7:00 p.m., 8:00 p.m., and 9:00 p.m.)—Learn all about these mammals and the light that threatens them
• I fly, therefore I am…? Focus on the evolution of batsSeeing with their ears—The secrets of echolocation
• Diet—When a hungry bat is on the hunt, insects run for their lives!
• Scientific studies—Different methods for studying nocturnal and inaudible animals
• Bat Conservation - What if we helped them at home?
• Bats in Need - How does the ARBOR care center help them?
• Parc des Evaux - How can we support nature in the park?

Activities for Families

• Bat Library: 6:00 p.m. to 9:00 p.m.

Activities for Children

• Bingo: 6:30 p.m., 7:15 p.m., 8:00 p.m.
• Bat Mask Workshop: 6:00 PM to 9:00 PM

In the park:
Activities for all ages

• Orienteering Course: 6:00 PM to 8:00 PM, results at 8:45 PM
• Acoustic walks: every 15 minutes starting at 8:30 p.m., sign up on-site

Organized by: Chauves-souris Genève in partnership with Muséum Genève.
In partnership with the Fondation des Evaux and the Restaurant des Evaux

Practical information:
Friday, August 28, 2026
6:00 PM–10:00 PM / free
Parc des Evaux, Event Hall at the Restaurant des Evaux
Chemin François-Chavaz 112, 1213 Onex
Refreshments available all evening; restaurant nearby