1. Department of Biological Sciences University of Cape Town Private Bag X3, Rondebosch, 7701, Cape Town South Africa
2. Department of Computer Science University of Cape Town Private Bag X3, Rondebosch, 7701, Cape Town South Africa
3. Department of Ecology and Evolution University of Lausanne, UNIL Sorge Le Biophore, CH ‐ 1015 Lausanne Switzerland
4. Percy FitzPatrick Institute of African Ornithology University of Cape Town Private Bag X3, Rondebosch, 7701, Cape Town South Africa