1. a Percy FitzPatrick Institute of African Ornithology, University of Cape Town , Rondebosch, South Africa , 7700
2. b South African Bird Ringing Unit, University of Cape Town , Rondebosch, South Africa , 7700
3. c Department of Zoology , University of Natal , Pietermaritzburg, South Africa , 3200
4. d Mountain Zebra National Park , Private Bag 66, Cradock, 5880
5. e Transvaal Nature Conservation Division , Barberspan Ornithological Research Station , Barberspan, South Africa , 2765
6. f Box 50093, Lusaka, Zambia