162 



YELLOW-BILLED CUCKOO 



FIG. 84. 

 Tent-caterpillar, eaten by Cuckoo. 



prepared so carelessly for them. The eggs of 

 both Yellow and Black-billed are greenish blue. 



The Cuckoos might well be called caterpillar 

 birds, for they are so given to a diet of the hairy 

 caterpillars that the walls of their stomachs are 

 actually permeated with the hairs, and a section 

 of stomach looks like the smoothly brushed top 

 of a gentleman's beaver (Fig. 85, p. 163). 



