Is Namibia on the brink of being invaded by Common Starling Sturnus vulgaris?

Abstract

On 11 September 2016, on a farm approximately 70 km south of Granau in southern Namibia, I observed a Common Starling ... This sighting near Granau of a starling in breeding plumage is disconcerting because it probably indicates that the species could move northwards through the inhospitable dry barrier of southern Namibia and colonise the more fertile inland areas with associated dire consequences to the local avifauna.