This video is called Jeroen van der Kooij and Kathrin Bogelsack – Artificial roosts for Vespertilio murinus (Particoloured bat).
In 2011, only the migration of Nathusius’s pipistrelles could be proved. Also in 2012, Nathusius’s pipistrelle was the most recorded species. Remarkably, however, in 2012 the Common pipistrelle, the Particoloured bat and Noctule bat registered on the uninhabited island. Good news: three new species thus Rottumeroog!