1. FitzPatrick Institute of African Ornithology, University of Cape Town, Cape Town, South Africa
2. Centre for Functional Biodiversity, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
3. School of Interdisciplinary Arts and Sciences, University of Washington, Bothell, United States
4. Conservation Biology Institute, Corvallis, Oregon, United States
5. East Cottar, Pitcox Cottages, Dunbar, United Kingdom
6. Climate System Analysis Group, University of Cape Town, South Africa
7. Department of Zoology and Entomology, Rhodes University, South Africa