324 
ON SAFARI 
Besides the larger kinds, there were also at Man and in the 
Sotik, as well as all over the wooded districts of East Africa, 
Hornbills of a smaller genus, distinguished as Lojphoceros , some 
of which I have endeavoured to sketch (see pp. 17, 199, 200, 
251). These included— 
Crowned Hornbill— L. melctnoleucus. 
Black-and-white Hornbill— L. fasciatus. 
Red-billed Hornbill— L. erythrorhynchus. 
All the hornbills, great and small, are very noisy birds. 
Some species of this group, Lojphoceros, have the curious habit of 
imprisoning the female while she is sitting on her eggs. The 
nest is placed in a hollow tree, the entrance to which the male 
plasters up with clay, leaving only a narrow slit through which 
he feeds the incubating female. 
Nightjars 
Pennant-winged Nightjar —Cosmetornis vexillarius. Abund¬ 
ant in bush-clad ravines and on wooded river-banks, 
such as Athi. Several will rise close by, and settle again, 
often squatting down on bare sand, within a few yards. 
The long streaming plumes or “ pennants ” (see sketch, 
p. 211) are only assumed at the breeding period—April. 
Racket-winged Nightjar— Mmrodipteryx macrodipterus. In this 
also the long, tufted plumes are only acquired at the 
nesting-time. The bird then, when flying, gives the 
impression, in the dusk, of being three birds—a big one 
with two smaller mobbing it. Baringo is one locality; 
but it is not common. 
Salvadori’s Nightjar—■ Cctprimulgus frenatus. A small Nightjar, 
common in the Mau and on the highlands, but replaced 
on Athi and the coast by the 
Mozambique Nightjar— C. fossei. Abundant from Athi to 
Mombasa, and audible everywhere after sundown. 
Donaldson-Smith s Nightjar— C. donaldsoni. A small species, 
very noisy. Common. At Baringo I found a nest with 
two eggs, on bare ground, on August 29—unusually 
late. 
