Τα εισιτήρια πωλούνται από το oberentfelden.ch – φεύγεις από το Swiss Activities.
Περί τίνος πρόκειται
The nest box cleaning in the Berg and Tann area is a hands-on volunteer activity in Oberentfelden focused on maintaining bird boxes. It is suitable for anyone interested in nature and bird conservation who wants to help out in a practical way.
