WESTERN MARTIN. 
611a. Progne subis hesperia. 8% inches. 
The male of this is not to he distinguished from the eastern 
Purple Martin, and in the female a lighter gray on the fore¬ 
head is the only difference. They nest m cavities of trees 
or in boxes provided for them in the cities and towns, hot 
in the east and west, as they are to; be found- 
throughout the United States and into British Columbia. They 
make their nests of twigs, roots and mud, usually lined with 
feathers, and lay from four to six white eggs (-95 x .6 ). 
CLIFF SWALLOW. 
612. Petroclielidon lunifrons. 5% inches. 
Their range is throughout the whole of North America; 
ttipv can easily be recognized by their brownish throat and 
breast whHe forehead and black cap. Their nests or homes 
are built of mud, securely cemented to the face of cli s, or 
under the eaves of buildings. They make them round or 
gourd-shaped, with a small opening m the side, and lm g 
fhe inside with grass and feathers. They lay four eggs, 
creamy white, spotted with shades of brown (.80x.oo). 
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