Black-shouldered Kite
Afrikaans name: Blouvalk

Black-shouldered Kite
Photo © Steven Herbert
Elanus caeruleus
Some sources call this species the Black-winged Kite to avoid confusion with the Black-shouldered Kite found in Australia (I think that the Australians should rename their species).
The black shoulders of this species are very evident when the bird is perched.
The Black-shouldered Kite is often seen hovering over open grassland while it hunts for prey. There are very few birds in South Africa that can actually hover as these birds can. Most need to do it into a strong breeze.
Their prey includes small rodents, insects and lizards.
They lay 3 or 4 eggs in a nest made of twigs.

Photo © Steven Herbert
The Black-shouldered Kite can be found virtually anywhere in South Africa. Although it may be found in a variety of habitats it prefers grassland, cultivated land and fynbos. Beyond South Africa's birders it is widely distributed through to India and parts of Europe.
References and further reading
A First Guide to South African Birds - 7th Edition - Author: Leonard Gill - Year Published: 1975 - Page: 126Animals of the Kruger National Park - Author: G. de Graaff - Year Published: 1987 - Page: 69
Birds of Prey of Southern Africa - Author: Peter Steyn - Year Published: 1985 - Page: 46
Birds of the Natal Drakensberg Park - Author: Robin Little and William Bainbridge - Year Published: 1992 - Page: 15
Birds of the South Western Cape - Author: Joy Frandsen - Year Published: - Page: 51
Collins Illustrated Checklist - Birds of Southern Africa - 1st edition - Author: Ber van Perlo - Year Published: 1999 - Page: 14
Eagles, Hawks & Falcons of the World - Author: Leslie Brown and Dean Amadon - Year Published: 1989 - Page: 240
Field Guide to the Birds of Kruger National Park - Author: Ian Sinclair and Ian Whyte - Year Published: 1991 - Page: 50
Field Guide to the Cradle of Humankind - Author: B. Hilton-Barber & Prof. L. R. Berger - Year Published: 2004 - Page: 179
Reader's Digest Illustrated Guide to the Game Parks and Nature Reserves of Southern Africa - 2nd edi - Author: Editor - Alan Duggan - Year Published: 1991 - Page: 409
Roberts' Birds of Southern Africa - 5th Edition - Author: Gordon Lindsay Maclean - Year Published: 1985 - Page: 113
Roberts' Birds of Southern Africa - 6th Edition - Author: Gordon Lindsay Maclean - Year Published: 1993 - Page: 109
Sasol Birds of Southern Africa - 4th Edition - Author: Ian Sinclair et al. - Year Published: 2011 - Page: 114
The Status & Conservation of Birds of Prey in the Transvaal - Author: W. Tarboton and D. Allan - Year Published: 1984 - Page: 24