Raphaël Arlettaz,^* Veronika Braunisch,^** Michael Schaub,^* James E. M. Watson<sup>***


*</sup>Raphaël Arlettaz (raphael.arlettaz@iee.unibe.ch) and Michael Schaub are with the Division of Conservation Biology, Institute of Ecology and Evolution, at the University of Bern, Switzerland, and the Swiss Ornithological Institute.
^**Veronika Braunisch is also with the Division of Conservation Biology, Institute of Ecology and Evolution, at the University of Bern, Switzerland, and the Forest Research Institute of Baden-Württemberg in Germany.
^***James E. M. Watson is with Global Conservation Programs, Wildlife Conservation Society, in the Bronx, New York, and the University of Queensland, The Ecology Centre, in Queensland, Australia.