This is a male. Females have less gray on the nape. They are endemic to Southern Africa. Three subspecies are recognized. This is the southernmost nominate race characterized by the male having its forehead and most of its crown and cheek deep mustard yellow. Formerly lumped with Yellow-crowned Canary (Serinus flavivertex) of East Africa. Canon PowerShot SX50 HS
References:
Clement, P. (2018). Cape Canary (Serinus canicollis). 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/61294 on 26 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.