This is a male showing its single subterminal tail bar. Females are similar but have many dark tail bands. Often considered a race of the Common Kestrel, this brightly colored bird is now recognized as a separate species based on its genetic distinctiveness and reduced sexual dimorphism. Digiscoped with Panasonic DMC-LX5 | Nikon FieldScope III | 30XWA | hand-held (no adapter).
References:
Groombridge, J.J., Jones, C.G., Bayes, M.K., van Zyl, A.J., Carrillo, J., Nichols, R.A. & Bruford, M.W. (2002) A molecular phylogeny of African kestrels with reference to divergence across the Indian Ocean. Mol. Phyl. & Evol. 25(2): 267–277.
Hockey, P.A.R., Dean, W.R.J. & Ryan, P.G. (2005) Roberts’ Birds of Southern Africa. 7th edition. Trustees of the John Voelcker Bird Book Fund, Cape Town.
Orta, J., Boesman, P. & Marks, J.S. (2018). Common Kestrel (Falco tinnunculus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53213 on 8 July 2018).