EOLLERS. 
47 
the nests of the latter^ the dyaks of Borneo erect stages and 
frames of bamboo along the sides of the precipices leading to 
the caves ; and when such structures^ from the nature of the 
place^ cannot be made^ they are let down by rattans from the 
heights above"^. When Mr. Low was in Borneo^ four ru- 
pees a pound were given for the black kind of nests^ which, 
from the feathers and other impurities mixed with them^ are 
much inferior to the white kinds which sell for so high a 
price in China ; such as they are, however, they form a source 
of considerable profit to the tribes inhabiting the limestone 
districts. 
The family Coeaciad^ contains the Rollers, bright-co- 
loured birds with strong compressed beaks, which are found 
for the most part in India and the Indian Islands ; the To- 
dies of the western hemisphere, whose history is alluded to 
further on; the Eur^/stomince, broad-billed birds, inhabi- 
tants for the most part of the Indian Islands (Plate III. 
fig. 1, EuTT/stomus Javanicus)', and the Motmots. The chief 
food of the greater part of these birds consists of insects, 
which the rollers generally capture on the wing. Of this 
family only one species occasionally visits the British Islands; 
this is the Common Roller {Coracias garrula), a bird, ac- 
* Sarawak, its Inhabitants and Productions, pp. 317, 395. 
