However, population size in Namibia is estimated at 96,500 birds, slightly less than the Herero Chat, and even this may underestimate the birds' true density. Based on SABAP1 atlas data, it was once thought to occupy an area of only 59,000 km2 (Simmons 1997m), but it is now predicted to occur in a much larger area of 238,000 km2, extending eastwards to the Waterberg Plateau Park, and south to the Namib-Naukluft National Park (24.5oS). It extends into the Huila, Namibe and Benguela provinces of Angola, where it occurs sparsely among rocky outcrops. In Namibia, it is commonest in the central highlands, but territory size is unknown (Simmons 1997m). At least four distinct territories were recorded in the National Botanical Gardens in Windhoek, an area of just under 10 ha, giving a density of about 2.5 ha per pair.