INTRODUCTION, 75 
twenty of them pertaining to the genus Bucco, and the species 
Bucco tectus (fig. 77) may serve as a representative of the whole. 
They feed chiefly on insects, which they take on the wing, 
darting after them suddenly from a lofty branch, much as a 
Kingfisher darts after its prey. They are exclusively confined 
Fig. 76. 

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The Red-headed Barbet (Capito erythrocephalus). 
to South and Central America. The same is the case with the 
Jacamars, Birds which are sometimes taken for Kingfishers ; 
their mode of feeding is similar to that just noted with regard to 
the Puff-birds. The Jacamars are usually of a green tint and 
have a metallic lustre. Their beaks are long and their tails 
wedge-shaped. The Green Jacamar (Galbula viridis) may serve 
