1 Department of Theoretical and Computational Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands.
2 Sovon Dutch Centre for Field Ornithology, Nijmegen, The Netherlands.
3 Experimental Zoology Group, Wageningen University, Wageningen, The Netherlands.
4 Department of Coastal Systems, Royal Netherlands Institute for Sea Research, Den Burg, The Netherlands.
5 BirdEyes Centre for Global Ecological Change at the Faculties of Science and Engineering and Campus Fryslân, University of Groningen, Leeuwarden.
6 Department of Knowledge Infrastructures, Campus Fryslân, Leeuwarden, The Netherlands.
7 Department of Biology, Lund University, Lund, Sweden.
8 Department of Animal Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands.