^ Fauna : Birds 



sort of enclave in the range of the bigger species will be 

 very curious. 



This Crested hornbill is well known to the Americo- 

 Liberians, who call it the ' monkey-bird," as it is supposed to 

 frequent the society of monkeys in the forest. Two other 

 striking forms of hornbill are fairly common in the forests. 

 There is the Black hornbill (Ceratogymna atrata\ the range of 

 which extends right across the continent to Uganda, and the 



301. THE BLACK HORNBILL (CEU ATOGYMNA ABRATA) : FEMALE 



nearly allied Elate hornbill (C. data}. Both these hornbills share 

 in common with other members of the same family in eastern 

 Asia the peculiarity that whereas the males have black heads and 

 necks the females have a plumage of bright red-brown instead. 

 This is illustrated in my painting, which has been made from 

 specimens procured from Liberia in 1905. I also give a drawing 

 of the head of a male Elate hornbill which died recently in the 

 Zoological Gardens, London. Amongst other points of difference, 



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