1. Centre for Functional Biodiversity, University of KwaZulu-Natal, Scottsville, South Africa
2. FitzPatrick Institute of African Ornithology, DSI/NRF Centre of Excellence, University of Cape Town, Cape Town, South Africa
3. AP Leventis Ornithological Research Institute, University of Jos, Jos, Nigeria
4. A Rocha Kenya, Watamu, Kenya
5. Ornithology Section, National Museums of Kenya, Nairobi, Kenya
6. School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa