1. British Antarctic Survey, Madingley, Cambridge CB3 0ET, UK
2. BirdLife International, Cambridge CB2 3QZ, UK
3. Lyell Centre, Heriot-Watt University, Edinburgh EH14 4BA, UK
4. School of Biological, Earth and Environmental Sciences (BEES), University College Cork, Cork T23 N73K, Ireland
5. MaREI, Centre for Marine & Renewable Energy, Environmental Research Institute, University College Cork, Cork T23 N73K, Ireland