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to steeples, towers, ruinous castles, abrupt rocks, 

 and other buildings, in the holes and under the 

 eaves of which it finds a safe retreat and a proper 

 situation to breed in. In Norway and Sweden the 

 Swifts build in hollow trees, forming their nests 

 of straw, moss, wool ; &c., which they collect with 

 great dexterity in their flight. The inside of the 

 nest is plastered with a glutinous substance, 

 furnished by glands peculiar to certain birds of 

 this genus. The eggs, of which there are usually 

 two, are of a transparent pinkish white. 



SWIFT, WHITE-BELLIED. 



ALPINE SWIFT. 



CTPSELUS ALPINUS, Temm. 



Several specimens of this species have been 

 taken in England, and three examples are known 

 to have been captured in Ireland, though it does 

 not migrate regularly as far northward as Britain. 

 It is common in the south of Europe, and in many 

 parts of Africa and Asia. The only peculiarity in 

 the habits of the Alpine Swift is that it appears 

 more partial to cliffs than buildings, the Common 

 Swift rather preferring artificial structures. The 

 nest is made of straw, moss, and other materials, 

 connected firmly together with a glutinous sub- 



Q 



