KEEL-BREASTED BIRDS. 



tain the insects that are the objects of search. The tongue 

 is long, flattened, and barbed, and by a peculiar muscular 

 arrangement can be forced out with great velocity. 



FIG. 308. Hornbill and young, cemented in their nest by the male, who 

 feeds them through a hole left for the purpose. 



The ivory-billed woodpecker (Campephilus principalis) 

 is a typical American form, confined to the Southern States 



