1. a Falcon College , Esigodini, Zimbabwe
2. b The Peregrine Fund Inc. , 5666 West Flying Hawk Lane, Boise, Idaho, 8307, U.S.A.
3. c Department of Nature Conservation , University of Stellenbosch , Stellenbosch, 7600, South Africa
4. d P.O. Box 67, Cato Ridge, Natal, 3680, South Africa
5. e Swiss Ornothological Institute , Sempach, Ch-6204, Switzerland
6. f Percy FitzPatrick Institute of African Ornithology, University of Cape Town , Rondebosch, 7700
7. g Transvaal Falconry Club , P.O. Box 1701, Halfway House, 1685
8. h Percy FitzPatrick Institute of African Ornithology, University of Cape Town , Rondebosch, 7700, South Africa
9. i Department of Birak , Transvaal Museum , P. O. Box 413, Pretoria, 0001
10. j Percy FitzPatrick Institute of African Ornithology, University of Cape Town , Rondebosch, 7700, Cape Town, South Africa
11. k P. O. Box 54, Newlands, 7725
12. l 9 Mulvihal Road, Rondebosch, 7700
13. m Percy FitzPatrick Institute of African Ornithology, University of Cape Town , Rondebosch, 7700, South Africa