1. DST-NRF Centre of Excellence at the FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch, Cape Town, South Africa
2. Department of Zoology, University of Cambridge, Cambridge, UK
3. Musumanene Farm, Choma, Zambia
4. Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Penryn TR10 9FE, UK