Alexandre Roulin is a full professor of biology at the University of Lausanne, Switzerland. For already two decades he is studying barn owls to answer evolutionary and ecological scientific questions. His main scientific interests are the adaptive function of melanin-based coloration and negotiation processes taking place in animal societies. Since 2009, he actively participates in the project of promoting cooperation between the Israeli, Palestinian and Jordanian communities using nature conservation as a tool. His ambition is to reconcile human with nature and to use inter-disciplinary approaches to promote peace and respect to our environment.