Roan

The original range for the species as described by Shortridge (1934) falls entirely above the 400mm rainfall isohyet (Figure 9). Hahn (1925) records roan as far east as 14oE along the Cunene River in Ovamboland although noting that these were temporary movements during the rains.

Gaerdes (1963) has examined early records of roan and gives none outside the range mapped by Shortridge. Joubert and Mostert (1975) note that the range for roan had decreased considerably since Shortridge's work.

Sable

In the early part of the 20th century sable antelope were only found in the Caprivi (Shortridge 1934). It is not mentioned by Hahn (1925) as occurring in Ovamboland. Joubert and Mostert (1975, page 21) refer to sable in their list of "unrecorded mammals" and regard the odd sightings of the species in Caprivi as temporary excursions of Botswana animals.

Tsessebe

Tsessebe did not occur below the 500mm rainfall isohyet (Shortridge 1934) (Figure 11). Shortridge notes that the species was occasionally seen in what is now the extreme northerly end of Khaudum Game Reserve and, as recently as the mid-1980s, they were recorded during aerial surveys of this area.

In the Caprivi, tsessebe were relatively abundant in the early part of the twentieth century. Gaerdes (1969) does not mention the species outside of the Caprivi and it is not mentioned by Hahn (1925) as occurring in Ovamboland.