Marico Flycatcher (colour morph)

Normally the adult has pure white underparts contrasting with brown upperparts. I'm not sure if this individual has the odd grey feather on its shoulder in photo 4 but it does have a distinct dark spot on its left leg. This bird was one of a small (family?) party of Maricos hawking along the road verge. They are conspicuous birds, partly due to their bold nature and partly because they hunt from conspicuous perches, frequently returning to the same place.