THE BIRDS OF ALGERIA. 73 



is a local resident in Algeria, its numbers being 

 largely increased in winter by migrants from Europe. 

 In winter it draws south into the oases. 



327. MOUSSIER'S BUSH CHAT Pratincola moussieri 

 (Olph-Gall.), is a resident in Algeria, but subject to 

 considerable internal migration according to season. 

 Thus in winter it becomes very rare in the north, 

 increasing in numbers as we go southwards, where, 

 according to Canon Tristram, it is found in every 

 garden and palm-grove, as well as in the thickets of 

 the dayats. In summer it comes up from the more 

 remote oases to breed, especially on the wooded 

 uplands of the Atlas. I noticed that it affected 

 rocky haunts as much as wooded ones. 



328. THE STONECHAT Pratincola rubicola (Lin- 

 naeus), is a resident in Algeria, breeding sparingly in 

 the district of the Tell, and visiting the oases in 

 winter, when its numbers are largely increased by 

 migrants from Europe. 



329. THE WHINCHAT Pratincola rubetra (Lin- 

 naeus), is a winter visitor to Algeria, frequenting the 

 oases, but there can be little doubt that a small 

 number breed in the Tell, as I noticed it at Batna, 

 Lambessa, and Constantine, in May. 



330. THE COMMON REDSTART Ruticilla phcenicurus 

 (Linnaeus), is a winter visitor to Algeria, but pro- 



