I wondered about 2 & 3 being sandgrouse at first, but think it's very unlikely that they'd be running round on a dirt road like that, also tail shape and head markings don't look right to me. Burchells Sandgrouse are also much lighter than the bird in the picture. If it is a sandgrouse, I'd say it's colouration looks much more like a double barred sandgrouse. (but again the facial/head markings and tail shape don't look quite right .......... that behaviour of hanging around a road and running rather than flying (see pic 2 - sandgrouse usually fly immediatly when disturbed, francolin prefer to run) is much more typical of a francolin of some sort.......and the markings make it look like an orange river francolin.