French Rooster

Hi everybody ! I would like you to help identifying this bird I've photographed a week ago. I was in the Kruger Park, the bird was flying and I was riding in the car and unfortunatly he flew away before I could take a better picture. I got my Roberts Bird Guide from SA but because of the lack of colours on the bird it's really hard. I think it might be a Hooded Vulture or even a Cape Vulture because of the shape of its tail and of the brown color. There is also this pink head and the white at the bottom of it. The shape primaries feather fits with the vultures' ones. I guess it might be extrapollation beacause their status are uncommun or nearly extincted but I can find anything else. Thank you very much for your help. Sincerely yours.