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, Scottsville, South Africa
3. Purposefully Lost Conservation Centre, Hoedspruit, South Africa
4. BirdLife South Africa, Johannesburg, South Africa
5. Wolwekraal Conservation and Research Organisation (WCRO), Prince Albert, South Africa