Originally Posted by xyz99
I assume this is also a Rock Kestrel - from the Hermanus area. I read that the Rock K. is a subspecies of the Common K, how can you tell the difference?
Can't help with the ID, but on taxonomy - it used to be a subspecies of the Common Kestrel, but has been split now as Falco rupicolus
(see e.g. IOC list
). However, post-split, Common Kestrel doesn't occur in S Africa.