1919-] tft,e Birds of the An(jlo-E(jijpliaa Sudan. 693 



plumage stage of tlie ordinary Bateleur. jNIr. Butler records 

 the red-backed form from throughout the entire Sudan, and 

 the light-backed from Sennar, Kordofan, and the Lado 

 Enclave. Reiclienow believes tiiat the light-backed phase 

 is the plumage of very old birds. In this case it is interesting 

 to note that Claude Grant while at Beira from November to 

 February saw a large number of Bateleur Eagles, every one 

 of which W'as the light-backed form. 



Butastur rufipennis. 



Poliornis rufipennis Suiid. ffifv. Ak. Forh. 1850, p. 131 : 

 near Khartoum. 



Butastur rufipennis Eeichw. V. A. i. p. 597 ; Butler, Ibis, 

 3905, p. 368, 1908, p. 253, 1909, p. 89. 



[B. coll.] 1 Kodok Jan., 1 Malakal May, U.N. ; 1 Amien 

 May, E.G. 



[C. & L. coll.] I Taufikia, 3 near Kodok, 2 White Nile 

 hit. 10° N.Jan. U.N. 



[Chr. coll.] 1 Wan July, E.G. 



Widely distributed in the Sudan and much giv(;n to local 

 movements from time to time. The bird from Wau is 

 probably immature, and is very much paler than any of 

 the other specimens. 



Circaetus gallicus. 



Fulco (/allicus Gmcliii, Syst. Nat. i. pt. 1, 1788, p. 259 : 

 Gallia (i. e. France). 



Circaetus gallicus Hartert, Viig. pal. Faun. p. 1189. 



[B. coll.] 1 Sherif Yakub Oct. B.N. 



[C. & L. coll] 1 Fashoda (Kodok) Jan. U.N. 



The Short-toed Eagle is a winter visitor from Europe and 

 western Asia to the Sudan, and thereby differs from all the 

 other members of the genus occurring there, which are 

 residents in Africa. The bird from Sherif Yakub is less 

 white and more brown on the chest than is usual, and in 

 that respect a[)proaches C. beaudouini, but the latter is more 

 slaty-grey than brown and the barring of the underside is 

 very much finer. 



si:u. XI. — VOL. I. 3 c 



