252 Mr. A. L. Butler on the 



the sheltered ravines. The natives assured me that it killed 

 a great many Klipspriuger fawns. 



Throughout our march in the Bahr-el-Ghazal Province 

 we saw numbers every day. I have not noticed it so 

 abundant anywhere else. This Eagle has extremely keen 

 sight, and two were accidentally caught in steel traps set 

 for mammals, though the meat bait had been carefully 

 screened over with thorns to conceal it as far as possible 

 from birds passing above. 



A nestling in brown plumage^ with the cere and orbital 

 skin olive-green, was brought to me from Kordofan on 

 Jan, Ist^ 1907, and is growing into a fine bird. I am now 

 rearing a second nestling, brought in on Dec. 24th, 1907. 



219. Aquila rapax (Temm.). 



The Tawny Eagle was numerous on the Suakin plain and 

 in the mountains of the district, often visiting our camps 

 after a gazelle or an ibex had been shot, and feeding on the 

 scraps in company with Neophron percnopterus. It was 

 frequently seen in the part of the Bahr-el-Ghazal country 

 which we visited. On one occasion I came on a pair making 

 a meal off one of the great cane-rats {Thryonomys swinder- 

 enianus), the skull of which I secured as a specimen. A 

 few days later Blaine saw a pair attack a small Bustard 

 {Otis lissotis) and took it from them in a dying condition. 



220. SpiZAiirus coronatus (Linn.). 



A splendid Crested Eagle, probably of this species, was seen 

 on a few occasions on the Pongo River, near Chak Chak, 

 and towards Dem Zubeir. It was usually very wary, and 

 I only succeeded in getting a long rifle-shot at one individual, 

 which I missed. 



221. Lophoai^tus occipitalis (Daud.). 



The Black-crested Eagle, so common .along the White 

 Nile and the lower parts of the Bahr-el-Ghazal River, 

 seemed very scarce in the interior of the Bahr-el-Ghazal 

 Province. I only saw it once on my line of march, at 

 Bir-el-Girud. 



