1. Netherlands Institute for Ecology (NIOO‐KNAW), Department of Animal Ecology, Droevendaalsesteeg 10, 6708 PB Wageningen The Netherlands
2. Radboud University, Department of Animal Ecology and Physiology, 6500 GL Nijmegen The Netherlands
3. Centre for Avian Population Studies The Netherlands
4. College of Science and Engineering, James Cook University Townsville QLD Australia
5. Sovon Dutch Centre for Field Ornithology, Sovon‐Texel, P.O Box 59, 1790 AB, Den Burg Texel The Netherlands
6. Radboud University, Department of Experimental Plant Ecology, 6500 GL Nijmegen The Netherlands