WILD ANIMALS OF THE EASTERN SUDAN 55 



certainty when the drinking-place has been discovered. 

 It travels a long distance after drinking, and I believe 

 that it is as hard to approach in the open as it is easy 

 to circumvent near the river. It has a curious habit 

 of standing for an hour or so some 20 yards back 

 from the high bank of the river, so that it is well to 

 walk parallel to the high bank and a hundred yards 

 or so away, when after tora, by which means a shot 

 will sometimes be obtained. The sexes are very hard 

 to distinguish, and the difference is much the same as 

 in roan. The usual drinking hour was, I found, about 

 11 a.m. The weight of a full-grown bull was over 

 300 Ib. 



The tiang hartebeest is not found at all on the 

 Settit, Atbara, or Rahad, although it is excessively 

 common on the Galegu, and exists on the Binder 

 and Blue Nile. I always found them grazing near 

 water, often in herds of fifty, and do not suppose that 

 there is any regular drinking-time. I did not find 

 them excessively hard to stalk, though when once 

 they became suspicious, they left at once with- 

 out asking questions. The difference between the 

 sexes is much the same as in roan, and the weight 

 of an old bull about 300 Ib. 



The bushbuck is found over much the same range 

 as the koodoo, but it is an extremely local animal, 

 which never stirs far from water, and drinks, I think, 

 daily, usually towards evening. It lives chiefly in 



