682 
AFRICAN GAME ANIMALS 
Guaso Nyiro. But the common zebra covers the range of 
all these animals in East Africa. It is abundant in the 
Sotik and on the Athi and Kapiti Plains, although inferior 
in number to the Coke hartebeest, with which it there 
associates together with the wildebeest and big and little 
gazelles; but the causes, whatever they are, which so sharply 
limit the range of the Coke hartebeest and wildebeest do 
not affect the zebra, which is also plentiful along the North¬ 
ern Guaso Nyiro in company with the oryx and the big 
Grevy zebra. On the other hand, while the zebra’s range 
overlaps that of the big hartebeests, the latter extend far 
to the westward of the regions in which the zebras are 
found; we found no zebras in the brush-covered and fairly 
well wooded and watered districts of Uganda in which 
hartebeests were not uncommon, and we saw none along 
the upper White Nile in regions in which hartebeests were 
plentiful and which were seemingly in their essential char¬ 
acteristics like the Sotik and the Athi, but they are known 
to occur locally in these regions. Moreover, while the 
hartebeests have become differentiated into sharply de¬ 
fined and totally distinct species, the common zebra ex¬ 
tends over a range which includes several of these harte¬ 
beest species, without itself undergoing anything like the 
same differentiation; in fact, the different varieties of the 
common zebra grade into one another, from the southern 
form with white legs to the more richly colored northern 
form with fully striped legs. 
Where water is plentiful and the pasturage good a herd 
of zebra will contentedly exist within an area of a dozen 
miles square, or less. In the absence of hunters such a herd 
normally leads an uneventful life, the placidity of which is 
