194 
ON SAFARI 
to speak; but rather the reduplication of a beak 
already grotesquely exaggerated—as shown on previous 
page. 
In the Sotik country we also observed many of 
the smaller kind of hornbill (Lophocerus), as well 
as crimson-winged touracos, dark-olive wood-pigeons 
(Columba arquatrix), bush-shrikes ( Dryoscopus ), black 
A toueaco of sotik ( GaUirex chlorochlamys). 
The Zambesi purple-crested loury. 
flycatchers with pure white breasts, and a few other 
species quite unknown to me. 
To return to the denser forest. Among the few 
small birds that enliven these solitudes, several w r ere 
obviously tits—their climbing and prehensile habit and 
incessant activity assured that identification. But many 
of these were almost black in hue—as befitted the gloom 
of this under-world. Their colour-scheme suggested an 
adaptation to environment; but that view is not borne 
out by further examination. For the characteristic, it 
appears, is common to several of the African Paridce 
whose haunts are not confined to the darkness of the 
tropical forest. 
We were disappointed in seeing nothing of the 
