Karl,

Regarding # 1 - Looking at the fence in relation to the bird, I don't see what else it can be other that a Kori Bustard...... but would be happy to be corrected by a local if you can suggest anything else?

Regarding the sandgrouse, pics of both I suggested are below and the Burchell's looks considerably too light in colour to me..... but again, I'd be happy to be corrected by someone who has more local knowledge than myself....