ALPINE SWIFT. 
WHITE-BELLIED SWIFT. 
PLATE LIX.—FIG. TI. 
Cypselus alpinus, , ; q Setpy. JENYNs. 
Tux Alpine Swift builds its nest among high rocks — 
in mountainous districts, and in holes in the steeples — 
of cathedrals and churches: the old situation is often 
again resorted to. 
It is composed of straw, grass, leaves, wool, feathers, — 
and moss, cemented together with gluten, which gives 
it a varnished appearance, The nest is said to be 
rather small in reference to the size of the bird; and 
is adapted in shape to the situation in which it is 
placed. 
The eggs, two, three, four, or five in number, and 
of an elongated form, are white: they are laid towards 
the end of May, and are hatched after fourteen peels 
incubation. The young, when first able to fly, still 
follow their parents, by whom they are for some time 
supplied with food on the wing. 
