This large monotypic pigeon has a discontinuous and scattered distribution from East to South Africa. It is primarily a fruit-eater and is somewhat nomadic. It is also called African Olive Pigeon by some authors and that English name is sometimes hyphenated as "Olive-Pigeon." The yellow bill and eyering distinguish this species from the more common and widespread Speckled Pigeon. Canon PowerShot SX50 HS.
References:
Baptista, L.F., Trail, P.W., Horblit, H.M. & Boesman, P. (2018). African Olive-pigeon (Columba arquatrix). 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/54110 on 25 June 2018).
Hockey, PAR, WRJ Dean, and PG Ryan, eds. 2005. Roberts' Birds of Southern Africa. 7th ed. Cape Town: John Voelcker Bird Book Fund.
Sinclair, I., Hockey, P.A.R., Arlott, N. (2005). The Larger Illustrated Guide to Birds of Southern Africa. Struik, Cape Town.