In the first part of the excursion bird calls are recognized and the birds are observed with binoculars. Then something is told about stag beetles and bats before ultrasound devices, so-called bat detectors, are used to search for nocturnal mammals. An exciting evening in the Fürstliches Schlosspark Sayn to experience the biodiversity of animals there and to see rare specimens live. Also suitable for children from preschool age. Guided tour by Manfred and Ursula Braun. Please bring binoculars.