192 
STRANGE DWELLINGS . 
Swallow, on the contrary, is open at the top, probably because 
the long forked tail would be crushed if pressed into so small a 
compass, while the shorter and simpler tail of the martin does 
not require so much space. 
Wherever it can find an old chimney, the Swallow will always 
build its nest therein, a habit which has gained for the bird the 
popular title of Chimney Swallow. It will, however, build in 
many other situations, such as precipitous rocks and quarries, 
barns, outhouses, and steeples. There are usually five eggs, and 
the nest is lined with a soft bed of feathers, like that of the 
martin. 
