Here is a copy of my response to a post from Sal on the Southern African Forum....
Wow! It's never easy to compare a single photo giving only one aspect with a picture in a book, but I would favour one of the widowbirds. On balance, but, to misquote the Duke of Wellington, it is a damn'd close-run thing - I would favour Red-collared Widowbird (f). But don't hold it against me!