1. FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa and Avisense Consulting, 10 Harrier Circle, Imhoff's Gift, Kommetjie 7975, South Africa
2. FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
3. BirdLife Zimbabwe, 35 Clyde Road, Eastlea, Harare, Zimbabwe
4. BirdLife South Africa, Private Bag X16, Pinegowrie 2123, South Africa
5. National University of Science and Technology, Forest Resources and Wildlife Management, P.O. Box AC939, Ascot, Bulawayo, Zimbabwe
6. Vic Fallsguide.com, P.O. Box 4, Victoria Falls, Zimbabwe
7. BirdLife South Africa, Private Bag X16, Pinegowrie 2123, South Africa and School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg, 2050, South Africa