Steve, the sandgrouse in our part of the world has the habit of sitting rather tight until you about step on them. They love sitting in or next to the road, especially when the grass is long like it was last year. I also have the advantage of having been with John when the photos where taken, we have very little francolin in that part of the Kalahari, compared to sandgrouse. Also, the first photo is of a normal stock fence, not a high fence, which might make the sandgrouse appear bigger than it is. Burchells is darker in the Kalahari, and slightly lighter in Northern Namibia/ Etosha. The females are generally also slightly lighter in color. The Namaqua sandgrouse male has a chocolate brown band as part of his bands (comapred to the blackish one of the Double banded sandgrouse), and no spots on the belly (compared to spotted belly of DBS). Also, it has the longer tailfeathers of the sandgrouse.