Swahili Sparrow

The Swahili sparrow (Passer suahelicus) is a passerine bird of the sparrow family Passeridae. It lives in the savanna of southern Kenya and Tanzania. Until recently, it was usually treated as a subspecies of the northern grey-headed sparrow (Passer griseus), with which it hybridizes in southern Tanzania and possibly elsewhere. It has a more rounded head profile however, a smaller eye and the grey head plumage extends unto the mantle. In addition to the subtle physical characteristics, the Swahili sparrow also differs from the northern grey-headed sparrow in terms of habitat preference, nest construction and post-breeding behaviour. They build grass nests in Acacia trees in dry regions, and generally avoid moister coastal lowlands or uplands. Wikipedia →

10–20% of wildlife watchers report a Swahili Sparrow sighting in Serengeti National Park, based on 748 days of visitor records from GBIF citizen-science data.