THE BIRDS OF ALGERIA, 47 



2co. THE WHITE-BELLIED SWIFT Cypselus mdba 

 (Linnaeus), is a summer visitor to Algeria, chiefly 

 confined to the mountain districts. I met with it 

 in some numbers on the cliffs at Constantine, con- 

 sorting with the preceding species. I also observed 

 it at Batna and El Kantara, but not further south. 

 Canon Tristram states that it breeds on the mosque 

 towers as well as on rocks. 



20 1. THE COMMON CUCKOO Cuculus canorus, 

 Linnaeus, is best known as passing through Algeria 

 on spring and autumn migration, but a few remain 

 in spring to breed. I found this species pretty 

 generally distributed, most frequent in the cedar 

 forests near Batna. 



202. THE CUCKOO Cuculus, sp. inc., seen by 

 Canon Tristram near Tuggurt (described by him 

 as " a small African species "), still remains un- 

 determined. 



203. THE GREAT SPOTTED CUCKOO Coccystes 

 glandarius (Linnaeus), is a summer visitor to 

 Algeria, generally distributed throughout the wooded 

 districts. 



204. THE ALGERIAN PIED WOODPECKER Picus 

 numidicus, Malherbe, is a resident in the forest 

 districts. It is the representative species of our 

 own Great Spotted Woodpecker (P. majo?'), and 



