1. FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch, South Africa
2. Wolwekraal Conservation and Research Organisation, Prince Albert, South Africa
3. DSI-NRF Centre of Excellence, FitzPatrick Institute of African Ornithology, University of Cape Town, Cape Town, South Africa
4. South African Environmental Observation Network (SAEON), Arid Lands Node, Kimberley, South Africa