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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 
ereat dexterity in their flight. The imside 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. 
Cypsenus Atrinus, Zemm. 
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 
