1. Swiss Ornithological Institute, Seerose 1, Sempach, 6204, Switzerland
2. Swiss Birdradar Solution AG, Technoparkstrasse 2, 8406, Winterthur, Switzerland
3. Centre for Ecology and Conservation and Environment and Sustainability Institute, University of Exeter, Cornwall Campus, Penryn, TR10 9FE, UK
4. Department of Entomology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
5. Department of Biology, Centre for Animal Movement Research, Lund University, Ecology Building, 22362 Lund, Sweden
6. Theoretical and Computational Ecology, IBED, University of Amsterdam, P.O. Box 94240, Amsterdam, GE 1090, The Netherlands
7. Oréade-Brèche, 70, rue de l'Eglise, 67130 Schirmeck, France
8. Independent researcher, Les Pennes-Mirabeau, 13170, France
9. Department of Theoretical and Applied Sciences, University of Insubria, Via J.-H. Dunant 3, Varese, 21100 Italy