1. Marine Scotland Science, Marine Laboratory Aberdeen UK
2. Centre for Animal Movement Research, Dept of Biology, Lund Univ. Ecology Building Lund Sweden
3. Dept of Biological Sciences, North Dakota State Univ. Fargo ND USA
4. Dept of Biology, Lund Univ. Ecology Building Lund Sweden
5. Baltic Seabird Project/Stockholm Resilience Centre, Stockholm Univ. Stockholm Sweden