1. Lismore, Ross-shire, UK
2. 83 Glaickbea, Skerray, by Thurso, Sutherland, UK
3. Beechgrove, Avoch, UK
4. Research School of Biology, The Australian National University, Acton, Australia
5. Royal Society for the Protection of Birds Centre for Conservation Science, North Scotland Regional Office, Inverness, UK
6. Department of Life and Environmental Sciences, University of Iceland, Reykjavík, Iceland