1. FitzPatrick Inst. of African Ornithology, DST‐NRF Centre of Excellence at the Univ. of Cape Town Rondebosch South Africa
2. Dept of Zoology, Inst. for Coastal and Marine Research, Marine Apex Predator Research Unit, Nelson Mandela Univ Port Elizabeth South Africa
3. School of Oceanography, Inst. for Coastal and Marine Research, Nelson Mandela Univ Port Elizabeth South Africa
4. Dept of Zoology and Entomology, Rhodes Univ Grahamstown South Africa