1. FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, Department of Biological Sciences, University of Cape Town, Cape Town, South Africa
2. South African Environmental Observation Network (SAEON): Arid Lands Node, Kimberley, South Africa
3. South African National Biodiversity Institute, Kirstenbosch Research Centre, Claremont, Cape Town, South Africa
4. SARChI-Chair on Biodiversity Value and Change, Department of Zoology, School of Mathematical and Natural Science, University of Venda, Thohoyandou, South Africa