After sunset, the European Nightjar, Natterjack Toad, and other night owls take the place of diurnal species. Mysterious sounds fill the evening air. Useful information : Binoculars. Appropriate dark-colored clothing (no neon) and boots (especially after rainy weather). Mosquito repellent can be useful. Registration mandatory with Joris, no later than June 10. Maximum 25 participants.