THE WINDOW-SWALLOW. 41 
of the sun may not crack and destroy their nests; 
but instances are also remembered where they bred 
for many years in vast numbers in a hot, stifled inn- 
yard, against a wall facing to the south. Birds in 
general are wise in their choice of situation; but in 
this neighbourhood, every summer, is seen a strong 







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The Window- Swallow { Hirundo ubica). 
proof to the contrary at a house without eaves in an: 
exposed district, where some martins build year by 
year in the corners of the windows. But as the 
corners of these windows (which face to the south- 
east and southwest) are too shallow, the nests are 
washed down every hard pon and yet these birds 
2 
