46 JOTTINGS ABOUT BIRDS. 



196. The Common Nightjar Caprimulgus euro- 

 pceus, Linnaeus, is most frequent in Algeria during 

 the two seasons of passage, but a few remain to 

 winter, and a few remain to breed in the country. 

 Details of its distribution, either in summer or 

 winter, are wanting. 



197. The Red-necked Nightjar Caprimulgus 

 rujicollis, Temminck, is probably a resident in Algeria 

 and Tunis, but subject to considerable internal 

 migration, breeding in the northern districts and 

 wintering in the remote oases of the Sahara. This 

 species, away from Algeria, has a very restricted 

 range, so far as is known, being a summer visitor 

 to the southern half of the Spanish Peninsula, and 

 to some of the Canary Islands. A single example 

 has been shot in the north of England. 



198. The Common Swift Cypselus apus (Lin- 

 naeus), is a summer visitor to Algeria, entirely 

 quitting the country in November. I found it 

 very generally dispersed both in the Tell and the 

 Sahara sub-region, and Canon Tristram remarked 

 its presence as a breeding species still further south. 



199. The Pallid Swift Cypselus apus paUklus, 

 Shelley, is a summer visitor to Morocco, and is 

 doubtless to be met with in various parts of 

 Algeria. 



