CUCULUS. 



377 



The birds belonging to this genus have very long graduated tails, very 

 short tarsi, and are without metallic colours in the plumage. 



This genus probably contains from thirty to forty species, which are dis- 

 tributed throughout the Old World up to the Arctic circle. One species 

 only is found in Europe, which is a regular summer visitor to the British 

 Islands. 



The birds in this genus are found in most districts, but chiefly frequent 

 well-wooded country. They are shy and wary, and fly quickly, with a 

 very Hawk-like aspect. Their food is almost entirely composed of insects 

 and their larvae, especially caterpillars. Their notes are loud and full, but 

 sometimes very harsh. In their breeding-habits they are most peculiar, 

 for they make no nest, but lay their eggs in that of other birds, leaving 

 their young to be reared by the foster-parents. 



NEST OF CHOUGH. 



