155 



cause they are very slow and quiet in their actions and do 

 not often use their voices, but they can sing, or rather they 

 have notes which can hardly be called songs. The tones of 

 the two species are very similar but one familiar with them 

 can always tell which kind it is by the sound and the 

 rhythm. The Black-bill has regular intervals between the 



Fig. 132. NEST OF YELLOW-BILLED CUCKOO. 



"kow-kow's" while the Yellow-bill usually rapidly retards 

 his. 



Although Cuckoos build homes and care for their young 

 after a fashion, thev do not have the attachment for them 

 that most birds do for their little ones. I have not yet, out 

 of probably half a dozen trials, succeeded in getting one to 



